USPS EXAM 943 944 945
1. HC: hydrocarbons
2. Hc is caused by: Misfire
3. Nox: High exhaust temps caused by high combustion temp
4. Egr open: Lean
5. Egr closed: Rich
6. Rich: Black smoke
7. Lean: White smoke
8. Secondary spring: Goes on first
9. lower ball joint: Load bearing
10.Vacuum range: 14-22 "
11.Cam to crank: Crank turns 2 times per 1 cam rotation
12.What is used for piston pin diameter: Micrometer
13.Amp: Electrical current
14.Ohm: unit of resistance
15.Volt: Unit of electric pressure
16.What tool measures amps: Ammeter
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, 17.What tool measures ohms: Ohmmeter
18.What tool measures Volts: Voltmeter
19.What is measured in volts: Battery's
20.What is measured in amps: Current stored capacity of power source
21.What is measured in ohms: Resistance between two points
22.Unit of volts: Ex 12.4 V
23.Unit of amps: A
24.Unit of ohms: ©
25.What is gasoline: H2 C
26.Oxygen: 02
27.Nitrogen: N2
28.carbon monoxide: Co
29.Camber: Moving the top of the wheel in and out
30.Neg camber: Brings top of tire towards engine
31.Positive Camber: The tops of the wheels tilt outward when viewed
from the front of the vehicle.
32.Toe in: Causes tires to wear on the outside
33.toe out: Tires to wear on inside
34.Caster: refers to the forward or backward tilt of the steering axis in
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1. HC: hydrocarbons
2. Hc is caused by: Misfire
3. Nox: High exhaust temps caused by high combustion temp
4. Egr open: Lean
5. Egr closed: Rich
6. Rich: Black smoke
7. Lean: White smoke
8. Secondary spring: Goes on first
9. lower ball joint: Load bearing
10.Vacuum range: 14-22 "
11.Cam to crank: Crank turns 2 times per 1 cam rotation
12.What is used for piston pin diameter: Micrometer
13.Amp: Electrical current
14.Ohm: unit of resistance
15.Volt: Unit of electric pressure
16.What tool measures amps: Ammeter
1/
, 17.What tool measures ohms: Ohmmeter
18.What tool measures Volts: Voltmeter
19.What is measured in volts: Battery's
20.What is measured in amps: Current stored capacity of power source
21.What is measured in ohms: Resistance between two points
22.Unit of volts: Ex 12.4 V
23.Unit of amps: A
24.Unit of ohms: ©
25.What is gasoline: H2 C
26.Oxygen: 02
27.Nitrogen: N2
28.carbon monoxide: Co
29.Camber: Moving the top of the wheel in and out
30.Neg camber: Brings top of tire towards engine
31.Positive Camber: The tops of the wheels tilt outward when viewed
from the front of the vehicle.
32.Toe in: Causes tires to wear on the outside
33.toe out: Tires to wear on inside
34.Caster: refers to the forward or backward tilt of the steering axis in
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