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Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question. |
| | 1. | The _______is the main housing of the engine that contains the cylinder. | a. | Head | b. | Block | c. | Piston | d. | Manifold | | | | | | | | | | |
| | 2. | The _______ is the engine automatically maintains the engine speed according to the load and throttle setting. | a. | Governor | b. | Throttle | c. | Cylinder | d. | Camshaft | | | | | | | | | | |
| | 3. | The camshaft turns at ________the speed of the engine crankshaft. | a. | 1/4 | b. | 1/2 | c. | 2/3 | d. | 2 times | | | | | | | | | | |
| | 4. | The ammeter on a tractor reads discharge as the engine speed is increased. The problem could be-- | a. | The generator output is high | | b. | The generator was replaced with a type “b” generator | | c. | The battery is an AC battery | | d. | The ammeter is wired incorrectly | | | | |
| | 5. | The function of the engine thermostat is to _________. | a. | Give fast engine warm up | | b. | Maintain an even operating temperature | | c. | Prevent engine overheating | | d. | All of these are correct | | e. | Give fast engine warm up and maintain an even operating temperature | | | | |
| | 6. | An alternator converts AC current into DC current for charging the battery by passing the AC current through__________. | a. | The ammeter | b. | Capacitors | c. | The diode trio | d. | Diodes | | | | | | | | | | |
| | 7. | An engine that seems to want to start but does not continue running when the starter is disengaged possibly has a _________. | a. | Open ignition resistor | | b. | Defective ignition switch | | c. | Defective bypass wire | | d. | All of these are correct | | e. | Open ignition resistor and defective ignition switch | | | | |
| | 8. | If volume is constant and the temperature drops, how will the pressure change? | a. | Go up | b. | Go down | c. | Stay the same | d. | None of these | | | | | | | | | | |
| | 9. | Preventive maintenance can do all of the following EXCEPT. | a. | Reduce failures | | b. | Reduce operating costs | | c. | Keep equipment safe | | d. | Keep your hands clean | | | | |
| | 10. | Contamination accounts for ________ of all hydraulic system problems. | a. | 20% | b. | 40% | c. | 60% | d. | 80% | | | | | | | | | | |
| | 11. | If you were diagnosing a circuit and found that there was infinite resistance between that circuit and ground, you would have found a/an __________. | a. | Open | b. | Short | c. | Ground | d. | Path | | | | | | | | | | |
| | 12. | Specific gravity is found using a: | a. | Mass spectrometer | | b. | Hydrometer | | c. | Glycolometer | | d. | Gravonometer | | | | |
| | 13. | A diode is an electrical device which ___________. | a. | Regulates voltage | | b. | Acts as a check value | | c. | Regulates current | | d. | Reverses current flow | | | | |
| | 14. | The top of a pressure cap on a radiator is to ____________. | a. | Raise the coolants boiling point | | b. | Quickly heat up the engine | | c. | Regulate the oil pressure | | d. | Maintain constant operating temps | | | | |
| | 15. | What color of smoke indicates the burning of oil? | a. | White | b. | Blue | c. | Black | d. | Brown | | | | | | | | | | |
| | 16. | The camshaft for a typical overhead valve V-8 engine has: | a. | 4 lobes | b. | 8 lobes | c. | 16 lobes | d. | 32 lobes | | | | | | | | | | |
| | 17. | Excessive clearance between oil pump body and gears would result in _________. | a. | Sticking oil by pass valve | c. | Drop in oil pressure | | b. | Overheating oil pump | d. | Back pressure buildup | | | | | | |
| | 18. | When installing spark plug wires in the distributor cap, besides the firing order you must also know _____________. | a. | Compression ratio | c. | Rotation | | b. | Piston displacement | d. | Governor setting | | | | | | |
| | 19. | Fuel and air are mixed in a diesel engine- | a. | Inside the cylinder | c. | In the super charger | | b. | Before they enter the cylinder | d. | In the injectors | | | | | | |
| | 20. | A device for regulating current by means of variable resistance is called: | a. | Rheostat | b. | Rotor | c. | Voltage limiter | d. | Current limiter | | | | | | | | | | |
| | 21. | The spider gears in the differential assembly are needed to ___________. | a. | Prevent gear clash | c. | Allow different axle speeds | | b. | Go in reverse | d. | Keep gears running cool | | | | | | |
| | 22. | In the carburetor the ____________ controls flow of fuel from tank to carburetor for a constant level of fuel. | a. | Throttle | b. | Float | c. | Choke | d. | Idle | | | | | | | | | | |
| | 23. | When the piston is at top dead center (TDC), in the compression stroke __________. | a. | Exhaust valve is open and the intake valve closed | | b. | Intake valve is open and exhaust valve is closed | | c. | Valves do not open separately but both at the same time when TDC occurs | | d. | Both the exhaust and intake valves are closed | | | | |
| | 24. | Work is in ____________. | a. | Energy that is exerted by one source upon another with a tendency to change the action of the one being acted upon | | b. | The action of a force to move a body at rest | | c. | Used to describe a rotating force | | | | |
| | 25. | The area between the cylinder ring grooves which hold and support rings is called _____________. | a. | Lands | b. | Skirts | c. | Separators | d. | A piston boss | | | | | | | | | | |