1301-Shop Safety & Procedures
1405-Basic Electrical Systems
1406/1349-Diesel Engines I&II
1417-Basic Brake Systems
1421-Power Train I
100
This device should be used at all times when inside the shop.
Eye protection/Safety Glasses
100
What device stores chemical energy and supplies electrical energy?
Battery
100
Valve lash is commonly adjusted when the cylinder being serviced is at this piston position on the compression stroke.
Top Dead Center (TDC)
100
This device removes moisture from compressed air.
Air dryer
100
This component connects and disconnects engine power from the transmission during gear changes.
Clutch assembly
200
What is a safe lifting procedure?
Lift by bending and then straightening your legs, rather then by using your back.
200
This device regulates alternator output by controlling rotor field current to prevent overcharging or under charging.
Voltage Regulator
200
This engine component converts reciprocating piston motion into rotary motion to create torque.
Crankshaft
200
This component converts air pressure into mechanical force to apply the foundation brakes.
Brake Chamber
200
Which of the following clutch components is splined to the input shaft of the transmission?
A-clutch friction disc
B-Pressure plate
C-release bearing
D-flywheel
A-clutch friction disc
300
What are the 4 steps when using a fire extinguisher?
Pull-Aim-Squeeze-Sweep
300
What is OHM's Law?
Ohm's law defines the relationship between voltage(V), current(I), and resistance(R) in an electrical circuit. (V=IR)
300
This device uses exhaust gas energy to compress intake air and increase engine power.
Turbocharger
300
This component maintains proper pushrod travel and brake shoe clearance.
Slack adjuster
300
If a transmission with a 5-speed main box is compounded by a two speed auxiliary section, how many gear ratios would be possible?
10
400
Where is information stored about chemicals used in the shop?
SDS (Safety Data Sheets)
400
When there are multiple 12-volt batteries in a bank, how must they be connected in a truck with a chassis voltage of 12-volts?
A-Series
B-Parallel
C-BOTH Series & Parallel
D-Neither Series or Parallel
B-Parallel
400
During this moment, both intake and exhaust valves may be slightly open to improve cylinder scavenging.
Valve overlap
400
An air leak at point X in the system shown would cause which of these to leak down?
#1 Tank ONLY
400
When discussing the rotation of gears and shafts in a truck transmission, which of the following terms can be used to describe clockwise rotation?
Right hand OR Forward
500
Diesel fuel has caught fire in the shop. What type of extinguisher should be used?
Class B
500
The horns in the circuit shown blow only when a jumper wire is connected between terminals 30 and 87 of the horn relay. Technician A says that a failed horn relay could be the cause. Technician B says that a short to ground in the circuit between the horn relay and the horn button could be the cause. Who is right?
Technician A ONLY
500
A rocker cover has cracked. During disassembly, the technician has discovered that the cover bolts rotated easily. Technician A says the problem is most likely that the wrong gasket was installed. Technician B says the cover bolts were probably not torqued in the proper sequence. Who is correct?
Technician B ONLY
500
Technician A says that in the event of a total failure of the primary circuit in an FMVSS-121 compliant tractor-trailer combination, the rig is designed to be brought safely to a complete stop. Technician B says that in the event of a total failure of the primary circuit the relay section of the treadle valve will be actuated mechanically. Who is correct?
BOTH
500
When adjusting clutch linkage, Technician A says that pedal free travel should be about 1 1/2 to 2 inches. Technician B says that free travel should be more than 1/2" measured at the release forks. Who is Correct?
Technician A only