MASS Test — Questions and Answers

Question 1: An operator's load chart indicates a gross capacity of 30,000 lbs for a specific lift. The rigging includes a 750 lb hook block, 450 lbs of slings and shackles, and a 1,200 lb spreader bar. What is the maximum weight of the load (net capacity) that can be safely lifted?

27,600 lbs (Correct answer)
29,250 lbs
28,800 lbs
30,000 lbs

Correct answer: 27,600 lbs

Net capacity is calculated by subtracting the weight of all rigging and lifting attachments from the gross capacity listed on the load chart. The calculation is: 30,000 lbs (Gross Capacity) - 750 lbs (Hook Block) - 450 lbs (Slings/Shackles) - 1,200 lbs (Spreader Bar) = 27,600 lbs.

Question 2: Hand signals are legally recognized as a valid way to communicate which of the following?

Fuel level
Vehicle weight
Turning and stopping intentions (Correct answer)
Speed limits

Correct answer: Turning and stopping intentions

Hand signals legally communicate a driver's intent to turn or stop.

Question 3: Before every lift, the operator should confirm the chart matches the crane's current setup, including counterweight, boom configuration, and:

The color of the load
The radio station
Outrigger position and quadrant of operation (Correct answer)
The day of the week

Correct answer: Outrigger position and quadrant of operation

Capacity depends on outrigger spread and the working quadrant, so both must match the chart in use.

Question 4: During an emergency such as a gas leak, what is the rule for Dig Safe notification?

No notification is ever needed for emergencies
Emergency excavation may proceed but Dig Safe must still be notified as soon as possible (Correct answer)
Wait the full 72 hours regardless
Only notify after the job is done

Correct answer: Emergency excavation may proceed but Dig Safe must still be notified as soon as possible

Emergency digs to protect life or property may begin immediately, but Dig Safe must be notified promptly.

Question 5: What do temporary survey markings use as their designated color?

Orange
Pink (Correct answer)
White
Yellow

Correct answer: Pink

Pink marks temporary survey markings under the APWA uniform color code.

Question 6: What color marking indicates gas, oil, steam, or petroleum pipelines?

Green
Red
Purple
Yellow (Correct answer)

Correct answer: Yellow

Yellow marks gas, oil, steam, petroleum, and other gaseous or flammable materials under the APWA color code.

Question 7: What does Massachusetts' implied consent law mean for licensed drivers?

They consent to chemical BAC testing if arrested for OUI (Correct answer)
They waive court appearances
They consent to insurance audits
They consent to vehicle searches

Correct answer: They consent to chemical BAC testing if arrested for OUI

By driving, you consent to chemical testing for alcohol if lawfully arrested for OUI.

Question 8: A mechanic is using a wheel and axle system to lift a heavy object. The wheel has a radius of 12 inches, and the axle has a radius of 2 inches. What is the Ideal Mechanical Advantage (IMA) of this system?

6 (Correct answer)
24
2
10

Correct answer: 6

The Ideal Mechanical Advantage (IMA) of a wheel and axle is calculated by dividing the radius of the wheel by the radius of the axle. In this case, IMA = 12 inches / 2 inches = 6.

Question 9: A driver wants to merge left and has no working left turn light. What is the best action?

Use the stop signal
Use the left-turn hand signal before merging (Correct answer)
Flash the headlights
Merge without any signal

Correct answer: Use the left-turn hand signal before merging

Extending the left arm straight out signals the intended left movement when the light fails.

Question 10: Evaluate: 12 + 6 ÷ 2 × 3.

21 (Correct answer)
27
30
36

Correct answer: 21

Following order of operations: 6 ÷ 2 = 3, 3 × 3 = 9, then 12 + 9 = 21.

Question 11: Which personal protective equipment is required when handling sulfuric acid in a water treatment area?

Acid-resistant gloves, goggles, and apron (Correct answer)
A standard dust mask
Hearing protection only
Cotton gloves only

Correct answer: Acid-resistant gloves, goggles, and apron

Corrosive acids require chemical-resistant gloves, eye protection, and an apron to prevent skin and eye burns.

Question 12: A worker earns $18 per hour plus $27 per hour of overtime. What is the pay for 40 regular hours and 5 overtime hours?

$945
$810
$900
$855 (Correct answer)

Correct answer: $855

(40 × 18) + (5 × 27) = 720 + 135 = $855.

Question 13: Why are charts for lifting on rubber (tires) typically much lower than charts for lifting on outriggers?

Tires provide a smaller, less rigid stability base than fully deployed outriggers (Correct answer)
Tires are heavier
Rubber charts include the counterweight
Outriggers add load weight

Correct answer: Tires provide a smaller, less rigid stability base than fully deployed outriggers

Outriggers create a wider, firmer support base, allowing much higher rated capacities than tires.

Question 14: To find the net capacity for a lift, what must be subtracted from the gross capacity?

The fuel weight
The outrigger pad weight
The weight of the hook block, rigging, and any load-handling devices (Correct answer)
The boom weight

Correct answer: The weight of the hook block, rigging, and any load-handling devices

Net capacity equals gross capacity minus the weight of the hook block, slings, and other load-handling devices.

Question 15: When two shapes are congruent, they have:

Same color only
Same shape and size (Correct answer)
Different shapes
Same shape, different size

Correct answer: Same shape and size

Congruent shapes match in both shape and size.

Question 16: Why might an otherwise-correct assembly answer be wrong?

One piece is rotated to an impossible orientation by reflecting it (Correct answer)
The pieces are the right size
It has no gaps
It uses all the pieces

Correct answer: One piece is rotated to an impossible orientation by reflecting it

If matching the shape requires flipping a piece, that answer is invalid.

Question 17: How long must a Massachusetts learner's permit holder under 18 hold the permit before getting a junior license?

3 months
1 month
12 months
6 months (Correct answer)

Correct answer: 6 months

Applicants under 18 must hold the learner's permit for at least 6 months.

Question 18: What is the volume of a box measuring 4 ft by 3 ft by 2 ft?

9 ft³
18 ft³
30 ft³
24 ft³ (Correct answer)

Correct answer: 24 ft³

Volume = 4 × 3 × 2 = 24 ft³.

Question 19: What does a yellow safety sign typically indicate?

Prohibited action
Caution or warning of a hazard (Correct answer)
Mandatory action required
Safe condition or exit

Correct answer: Caution or warning of a hazard

Yellow signs warn of potential hazards requiring caution.

Question 20: On a mobile crane load chart, what does the term 'gross capacity' represent?

The total rated lift before deducting the weight of rigging and load-handling devices (Correct answer)
The weight of the crane itself
The net weight available for the customer's load only
The maximum counterweight allowed

Correct answer: The total rated lift before deducting the weight of rigging and load-handling devices

Gross capacity is the chart value before subtracting rigging, hook block, and other load-handling device weights.

Question 21: Which condition requires a wire rope sling to be immediately removed from service?

Slight stiffness after storage
Visible rope twist from previous use
Minor surface oxidation
Six randomly distributed broken wires in one lay (Correct answer)

Correct answer: Six randomly distributed broken wires in one lay

ASME B30.9 requires removal of wire rope slings with six or more randomly distributed broken wires in one rope lay.

Question 22: What should you do if you notice a frayed or worn drive belt?

Tighten it with tape
Replace it before it fails and disables key systems (Correct answer)
Leave it until it snaps
Cut it off entirely

Correct answer: Replace it before it fails and disables key systems

A worn drive belt can fail and disable systems like the alternator or water pump, so it should be replaced promptly.

Question 23: In Massachusetts, how many business days before excavation must you notify Dig Safe?

At least 24 hours
At least 2 hours
At least 72 hours (3 business days) (Correct answer)
At least 7 business days

Correct answer: At least 72 hours (3 business days)

Massachusetts law requires notifying Dig Safe at least 72 hours (3 business days) before digging, excluding weekends and holidays.

Question 24: A circle has a radius of 7. Using π ≈ 22/7, what is its circumference?

33
22
44 (Correct answer)
49

Correct answer: 44

Circumference = 2πr = 2 × 22/7 × 7 = 44.

Question 25: What is the BAC limit for drivers under age 21 under Massachusetts' Junior Operator Law?

0.00%
0.08%
0.02% (Correct answer)
0.05%

Correct answer: 0.02%

Under-21 drivers face a 0.02% BAC limit under the state's zero-tolerance-style rules.

Question 26: A spongy or soft brake pedal most likely indicates:

A clean air filter
Properly inflated tires
A fully charged battery
Air in the brake lines or low brake fluid (Correct answer)

Correct answer: Air in the brake lines or low brake fluid

A soft or spongy pedal often means air has entered the brake lines or the brake fluid is low.

Question 27: A technician needs to lift a heavy engine block. Using a pulley system with four rope segments supporting the load, how does the required effort change compared to lifting it directly?

The effort is reduced to one-fourth of the engine's weight. (Correct answer)
The effort is reduced to one-half of the engine's weight.
The effort remains the same as the engine's weight.
The effort is doubled.

Correct answer: The effort is reduced to one-fourth of the engine's weight.

The ideal mechanical advantage (IMA) of a pulley system is equal to the number of rope segments directly supporting the load. In this case, with four supporting ropes, the IMA is 4. This means the required effort to lift the engine is reduced to one-fourth of its actual weight.

Question 28: What should you inspect on the wheels besides the tires?

The window tint
The paint shine only
The radio settings
Lug nuts, rims, and bearings for security and damage (Correct answer)

Correct answer: Lug nuts, rims, and bearings for security and damage

Lug nuts, rims, and bearings should be checked for tightness and damage to ensure wheel safety.

Question 29: What is a sign that a vehicle's battery may need attention?

A full fuel tank
Properly inflated tires
A clean windshield
Slow engine cranking or corroded terminals (Correct answer)

Correct answer: Slow engine cranking or corroded terminals

Slow cranking and corroded terminals are common signs of a weak or failing battery.

Question 30: What document or confirmation must be obtained from the utility company before a crane may operate inside the minimum approach distance to power lines?

A line ownership certificate
An electrical inspection report from a licensed electrician
A high-voltage work permit issued by the local authority
Written confirmation that lines have been de-energized, grounded, or insulated (Correct answer)

Correct answer: Written confirmation that lines have been de-energized, grounded, or insulated

OSHA requires written confirmation from the utility that lines are de-energized and grounded, or physically insulated, before any crane work is permitted inside the minimum clearance.

Question 31: When using a ladder, the 4-to-1 rule refers to:

Climbing four rungs then resting once
Four workers per ladder
Replacing the ladder every four years
Base placement of one foot out for every four feet of height (Correct answer)

Correct answer: Base placement of one foot out for every four feet of height

The 4-to-1 rule ensures a stable ladder angle.

Question 32: What is √81?

11
7
8
9 (Correct answer)

Correct answer: 9

9 × 9 = 81, so √81 = 9.

Question 33: What is the function of an arc flash hazard label on a switchgear panel?

To communicate incident energy and required PPE for safe work (Correct answer)
To indicate paint color
To show the manufacturer warranty
To list maintenance dates

Correct answer: To communicate incident energy and required PPE for safe work

Arc flash labels specify incident energy levels and the PPE category needed to protect workers from an arc flash.

Question 34: Which of the following best describes the concept of torque?

The resistance to motion between two surfaces in contact.
A twisting force that causes rotation around an axis. (Correct answer)
The rate at which work is done in a system.
The linear force required to accelerate a mass.

Correct answer: A twisting force that causes rotation around an axis.

Torque is the rotational equivalent of linear force. It is a measure of how much a force acting on an object causes that object to rotate. It is calculated by multiplying the force by the perpendicular distance from the axis of rotation to the point where the force is applied.

Question 35: Why is two-way radio communication maintained between control room and field operators during switching operations?

For casual conversation
To coordinate actions and confirm equipment status safely (Correct answer)
To test battery life
To reduce paperwork

Correct answer: To coordinate actions and confirm equipment status safely

Continuous communication ensures switching steps are coordinated and equipment status is confirmed before acting, preventing errors.

Question 36: What is the function of the vehicle's coupling device or hitch?

To filter engine oil
To steer the front wheels
To control the headlights
To securely connect a trailer or towed load (Correct answer)

Correct answer: To securely connect a trailer or towed load

A coupling device or hitch securely connects a trailer or towed load to the vehicle.

Question 37: To verify a finished assembly, you should confirm that:

All pieces are the same size
Every piece is used and fits without gaps or overlaps (Correct answer)
The figure is symmetrical
The outline is a perfect square

Correct answer: Every piece is used and fits without gaps or overlaps

A valid assembly uses all pieces with no gaps and no overlaps.

Question 38: A construction company in Massachusetts has an employee whose hoisting license expired 8 months ago. What is the status of the license and what must be done to legally operate hoisting equipment again?

The license is considered active for up to one year after expiration.
The license is in a one-year grace period for renewal but operation is illegal until renewed. (Correct answer)
The license is void, and the operator must retake the full exam.
The license is in a 6-month grace period and can be renewed with a late fee.

Correct answer: The license is in a one-year grace period for renewal but operation is illegal until renewed.

Massachusetts law provides a one-year grace period after a hoisting license expires during which it can be renewed. However, it is illegal for the individual to operate any hoisting machinery while the license is in this expired state. After one year, the license becomes null and void, requiring the operator to retake the exam.

Question 39: An instruction states: "Press and hold the reset button for 5 seconds to clear the fault." Briefly tapping the button will:

Save settings
Restart the system
Not clear the fault (Correct answer)
Clear the fault

Correct answer: Not clear the fault

A brief tap does not meet the 5-second hold requirement.

Question 40: What is the correct way to test the parking brake?

Ignore it during inspection
Use it instead of the steering wheel
Press it while at highway speed
Engage it and confirm it holds the vehicle stationary (Correct answer)

Correct answer: Engage it and confirm it holds the vehicle stationary

The parking brake should hold the vehicle securely in place when engaged on a slope or flat surface.

Question 41: What should a worker do if a colleague collapses inside a confined space?

Immediately enter to pull them out
Activate the rescue plan and summon trained rescuers without entering unprotected (Correct answer)
Open a window for ventilation only
Wait for the next shift

Correct answer: Activate the rescue plan and summon trained rescuers without entering unprotected

Untrained entry is a leading cause of multiple fatalities, so the rescue plan and trained responders must be activated.

Question 42: What should a crane operator do if a lightning storm develops during operations near power lines?

Suspend all operations immediately and move equipment to a safe distance (Correct answer)
Switch to manual controls and reduce the rated load capacity by 50%
Lower the boom angle to reduce the crane's height profile
Continue operations but double the normal clearance distance

Correct answer: Suspend all operations immediately and move equipment to a safe distance

Lightning dramatically increases the electrical hazard near overhead lines; all crane operations must be suspended and equipment repositioned to a safe location until the storm passes.

Question 43: What is 'step potential' and why does it pose a hazard near an energized crane?

The voltage required to start the crane engine, which varies with temperature
A voltage difference between two ground contact points that drives current through a person's legs and body (Correct answer)
The electrical resistance of the crane's tracks that prevents proper grounding
The mechanical force needed to climb crane steps; it increases risk of falls

Correct answer: A voltage difference between two ground contact points that drives current through a person's legs and body

Step potential is the voltage difference between two points on the ground energized by a fault current; a person standing with feet apart creates a circuit through their body, causing electrocution.

Question 44: An operator plans a lift calculated to be 85% of the crane's rated capacity. However, the wind speed is forecast to be 25 mph. What is the correct course of action?

Proceed with the lift as planned since it is within the rated capacity.
Increase the swing speed to counteract the wind's effect.
Halt the lift and consult the manufacturer's guidelines for wind speed limitations. (Correct answer)
Add 500 lbs to the load calculation to account for wind pressure.

Correct answer: Halt the lift and consult the manufacturer's guidelines for wind speed limitations.

Load charts are based on ideal, calm conditions. Wind exerts significant side-loading on the boom and the load, which can destabilize the crane. Operators must adhere to the crane manufacturer's specified maximum wind speed for operation, which is often around 20-25 mph for mobile cranes. Exceeding this limit requires stopping the operation.

Question 45: Which number is a prime number?

33
21
27
29 (Correct answer)

Correct answer: 29

29 has only two factors, 1 and itself, making it prime.

Question 46: In Massachusetts, when is a right turn on red permitted?

Anytime without stopping
Never
Only with a green arrow
After a full stop, unless a sign prohibits it and when safe (Correct answer)

Correct answer: After a full stop, unless a sign prohibits it and when safe

Right on red is allowed after a complete stop and yield, unless a posted sign prohibits it.

Question 47: A note reads: "Replace the filter every 3 months or after 500 hours of use, whichever comes first." A filter has run 480 hours over 4 months. It should be:

Kept until 500 hours
Replaced now (Correct answer)
Cleaned only
Replaced at 6 months

Correct answer: Replaced now

4 months already passed the 3-month limit, which came first.

Question 48: Which scenario most requires using a hand signal as a backup?

A parked vehicle
A new car with working lights
A car in a closed garage
A vehicle with a burned-out brake light (Correct answer)

Correct answer: A vehicle with a burned-out brake light

A burned-out brake or turn light makes hand signals essential to communicate intent.

Question 49: The primary purpose of a job hazard analysis (JHA) is to:

Order replacement parts
Calculate production output
Identify hazards in each task step before work begins (Correct answer)
Schedule employee shifts

Correct answer: Identify hazards in each task step before work begins

A JHA breaks tasks into steps to find and control hazards.

Question 50: What is the perimeter of a square with a side length of 9 inches?

36 inches (Correct answer)
27 inches
18 inches
81 inches

Correct answer: 36 inches

Perimeter = 4 × side = 4 × 9 = 36 inches.

Question 51: What should an excavator do if no markings appear after the required waiting period has passed?

Contact Dig Safe to confirm status before digging, not assume the area is clear (Correct answer)
Assume only one utility exists
Mark the lines themselves
Begin digging since no lines were marked

Correct answer: Contact Dig Safe to confirm status before digging, not assume the area is clear

Missing marks do not guarantee a clear area; the excavator must verify with Dig Safe before proceeding.

Question 52: What is the correct response to a turbine vibration alarm exceeding safe limits?

Increase the load to dampen vibration
Disable the alarm
Ignore it until the next inspection
Follow procedures to investigate and trip the unit if required (Correct answer)

Correct answer: Follow procedures to investigate and trip the unit if required

Excessive vibration can indicate mechanical failure, so operators must investigate and trip the unit if limits are exceeded.

Question 53: Physical barricades marking the minimum approach distance to power lines during crane operations are typically what color?

Red flags or cones indicating a danger or exclusion zone (Correct answer)
Green markers indicating a safe working perimeter
Yellow, matching standard caution tape
Blue barriers placed at twice the minimum clearance distance

Correct answer: Red flags or cones indicating a danger or exclusion zone

Red flags, cones, or barriers are placed at the minimum approach distance perimeter to visually warn equipment operators and workers that they are entering the restricted electrical hazard zone.

Question 54: What does a bold line or shaded area on a load chart commonly indicate?

The recommended idle setting
The point where the limitation changes from structural strength to stability (tipping) (Correct answer)
The maximum travel speed
The location of the cab heater

Correct answer: The point where the limitation changes from structural strength to stability (tipping)

The line separates capacities limited by structural strength from those limited by stability/tipping.

Question 55: If utility markings have faded or been destroyed before digging is complete, what must the excavator do?

Re-paint the marks themselves
Estimate the line location from memory
Submit a re-mark request to Dig Safe (Correct answer)
Continue digging carefully

Correct answer: Submit a re-mark request to Dig Safe

When marks are no longer visible or reliable, the excavator must request a re-mark rather than guess.

Question 56: What is 'electrical flashover' in the context of crane operations near power lines?

The grounding system discharging static electricity built up on the crane
An electrical arc that jumps through the air from an energized conductor to the crane without physical contact (Correct answer)
A short circuit within the crane's own wiring caused by moisture
The crane's emergency lighting system activating when primary power fails

Correct answer: An electrical arc that jumps through the air from an energized conductor to the crane without physical contact

Electrical flashover occurs when the voltage gradient exceeds the air's insulating capacity, causing current to arc between an energized power line and nearby equipment even without physical contact.

Question 57: An operator is using a crane with a rotating superstructure near a walkway. Which of the following is a required safety procedure to prevent personnel from entering the swing radius?

Erecting barricades or warning lines. (Correct answer)
Operating only when the walkway is empty.
Sounding the horn before each swing.
Having a spotter watch the walkway at all times.

Correct answer: Erecting barricades or warning lines.

As per 520 CMR 6.08(c)(6), 'Prior to operating hoisting machinery with a rotating superstructure, safety procedures such as but not limited to the erection of barricades, warning lines or other procedures shall be used to prevent entry into the swinging superstructure's radius.' While other options are good practices, physical barriers are explicitly required.

Question 58: A burning smell while driving could indicate:

Properly working wipers
A fresh air filter
Overheating brakes, clutch, or electrical issues (Correct answer)
A clean interior

Correct answer: Overheating brakes, clutch, or electrical issues

A burning smell may signal overheating brakes, a slipping clutch, or electrical problems that need inspection.

Question 59: Which of the following documents MUST be kept with the hoisting machinery and be readily available at the site for examination by the Department of Public Safety?

A written and signed record of all inspections. (Correct answer)
The operator's DOT medical certificate.
The company's written hoisting safety plan.
The original bill of sale for the equipment.

Correct answer: A written and signed record of all inspections.

520 CMR 6.08(c)(1) requires that 'A written and signed record of all inspections shall be kept with the hoisting machinery and made available at the site for examination by the Department that conforms with the requirements of 29 CFR 1926.1412.'

Question 60: An operator is controlling a crawler crane and needs to move both tracks forward. What is the correct hand signal the signal person should provide?

Raise one fist to lock a track and circle the other fist.
Extend one arm forward with the hand open in a pushing motion.
Rotate both fists around each other in front of the body in a forward direction. (Correct answer)
Point the index finger in the direction of travel.

Correct answer: Rotate both fists around each other in front of the body in a forward direction.

For a crawler crane, the 'Travel (Both Tracks)' signal is made by rotating both fists around each other in front of the body. The direction of rotation indicates forward or backward movement.

Question 61: Rotating a shape 180° is equivalent to:

No change
A single reflection
Two 90° turns in the same direction (Correct answer)
A translation

Correct answer: Two 90° turns in the same direction

A 180° rotation equals two consecutive 90° turns the same way.

Question 62: Which fraction is equivalent to 0.75?

4/5
2/3
1/2
3/4 (Correct answer)

Correct answer: 3/4

3 divided by 4 equals 0.75.

MASS Test

The MASS Test exam validates essential knowledge and skills required for certification or licensure in this field.

Questions

60 min

Time Limit

70%

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