CDL HW EXAM QUESTIONS AND ANSWERS
1.A commercial motor vehicle's (CMV's) engine controls are used for
* 10 points
A. safely operate your vehicle.
B. start up and shut down the vehicle's engine.
C. warn you when pressures or temperatures reach a dangerous level.
D. help you steer, accelerate, brake, and park your CMV.
ANS start up and shut down the vehicle's engine
2.If your truck has a(n) , you must first turn the engine key to the
'on' position before engaging it. *
10 points
A. starter button
B. engine brake
C. clutch button
D. cruise control
ANS starter button
3.Which clutch position is required to start the engine or shift gears?
* 10 points
A. Engaged
B. Free play
C. Disengaged
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,D. Clutch brake
ANS Disengaged
4.Which of the following is a yellow, diamond-shaped knob that allows you
to activate the parking brake? *
10 points
A. Parking brake control valve
B. Trailer air supply valve
C. Foot brake control valve
D. Trailer brake hand-control valve
ANS Parking brake control valve
5.Secondary vehicle controls
* 10 points
A. provide backup functionality to the primary controls.
B. shut down the vehicle's engine in an emergency.
C. assist you in a safely operating your vehicle.
D. all of the above.
ANS assist you in a safely operating your vehicle
6.If your CMV has a , the Federal Motor Carrier Safety
Regulations (FMCSR) say you must use it. *
10 points
A. seat heater
B. cruise control
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,C. seat belt
D. fog lamps
ANS seat belt
7.Which vehicle instrument measures the voltage in a vehicle's
electrical system? *
10 points
A. Voltmeter
B. Exhaust pyrometer
C. Ammeter
D. Both A and C
ANS Voltmeter
8.What is a normal operating range for a CMV's oil pressure gauge? *
10 points
A. 20-45 psi
B. 30-50 psi
C. 40-65 psi
D. 50-70 psi
ANS 30-50 psi
9.Which of the following warning devices help you to know when
exhaust temperatures are abnormal? *
10 points
A. Pyrometer warning light
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, B. Coolant temperature warning light
C. Differential warning light
D. Both A and B
ANS Pyrometer warning light
10.Which of the following warning devices indicates there is
inadequate pressure in the air brake system? *
10 points
A. Coolant level alarm
B. Oil level alarm
C. Low pressure warning alarm/light
D. Oil pressure warning light
ANS Low pressure warning alarm/light
11.In order to put a commercial motor vehicle on the road, you must first
* 10 points
A. complete and sign a DVIR.
B. ask a mechanic about the vehicle's condition.
C. conduct a thorough pre-trip inspection.
D. perform a short test drive to verify safe operation.
ANS complete and sign a DVIR.
12.Before you inspect the engine compartment and front axle components
* 10 points
A. verify the parking brakes have been set.
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1.A commercial motor vehicle's (CMV's) engine controls are used for
* 10 points
A. safely operate your vehicle.
B. start up and shut down the vehicle's engine.
C. warn you when pressures or temperatures reach a dangerous level.
D. help you steer, accelerate, brake, and park your CMV.
ANS start up and shut down the vehicle's engine
2.If your truck has a(n) , you must first turn the engine key to the
'on' position before engaging it. *
10 points
A. starter button
B. engine brake
C. clutch button
D. cruise control
ANS starter button
3.Which clutch position is required to start the engine or shift gears?
* 10 points
A. Engaged
B. Free play
C. Disengaged
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116
,D. Clutch brake
ANS Disengaged
4.Which of the following is a yellow, diamond-shaped knob that allows you
to activate the parking brake? *
10 points
A. Parking brake control valve
B. Trailer air supply valve
C. Foot brake control valve
D. Trailer brake hand-control valve
ANS Parking brake control valve
5.Secondary vehicle controls
* 10 points
A. provide backup functionality to the primary controls.
B. shut down the vehicle's engine in an emergency.
C. assist you in a safely operating your vehicle.
D. all of the above.
ANS assist you in a safely operating your vehicle
6.If your CMV has a , the Federal Motor Carrier Safety
Regulations (FMCSR) say you must use it. *
10 points
A. seat heater
B. cruise control
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,C. seat belt
D. fog lamps
ANS seat belt
7.Which vehicle instrument measures the voltage in a vehicle's
electrical system? *
10 points
A. Voltmeter
B. Exhaust pyrometer
C. Ammeter
D. Both A and C
ANS Voltmeter
8.What is a normal operating range for a CMV's oil pressure gauge? *
10 points
A. 20-45 psi
B. 30-50 psi
C. 40-65 psi
D. 50-70 psi
ANS 30-50 psi
9.Which of the following warning devices help you to know when
exhaust temperatures are abnormal? *
10 points
A. Pyrometer warning light
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, B. Coolant temperature warning light
C. Differential warning light
D. Both A and B
ANS Pyrometer warning light
10.Which of the following warning devices indicates there is
inadequate pressure in the air brake system? *
10 points
A. Coolant level alarm
B. Oil level alarm
C. Low pressure warning alarm/light
D. Oil pressure warning light
ANS Low pressure warning alarm/light
11.In order to put a commercial motor vehicle on the road, you must first
* 10 points
A. complete and sign a DVIR.
B. ask a mechanic about the vehicle's condition.
C. conduct a thorough pre-trip inspection.
D. perform a short test drive to verify safe operation.
ANS complete and sign a DVIR.
12.Before you inspect the engine compartment and front axle components
* 10 points
A. verify the parking brakes have been set.
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