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Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question. |
| | 1. | A specification of 288 inch pounds would be converted to: | a. | 24 foot pounds | b. | 28 foot pounds | c. | 72 foot pounds | d. | 96 foot pounds | | | | | | | | | | |
| | 2. | A 80302 Briggs and Stratton model series engine has a displacement of: | a. | 3 cubic inches | b. | 2 cubic inches | c. | 8 cubic inches | d. | 30 cubic inches | | | | | | | | | | |
| | 3. | The crankshaft in a 4-cycle engine turns at ________ speed of the camshaft? | a. | twice | c. | one-half | | b. | four times | d. | the same speed as | | | | | | |
| | 4. | The air fuel mixture goes first into the crankcase in the? | a. | 2 cycle engine | c. | diesel cycle engine | | b. | 4 cycle engine | d. | L P gas cycle engine | | | | | | |
| | 5. | The 2 cycle small gas engine does not have? | a. | a carburetor | c. | poppet valves | | b. | rings | d. | a pressurized crankcase | | | | | | |
| | 6. | The proper formula for determining piston displacement is? | a. | bore squared divided by 4 and multiplied by PI and by stroke | | b. | bore divided by 4 and multuplied by PI and by stroke | | c. | stroke divided by 2 and multupled by PI and by bore | | d. | stroke squared divided by 4 and multiplied by PI and by bore | | | | |
| | 7. | Which of the following indicated the proper piston stroke sequence for a 4 cycle engine | a. | intake, power, exhaust, compression | c. | intake, compression, power, exhaust | | b. | intake, compression, exhaust, power | d. | intake, power, compression, exhaust | | | | | | |
| | 8. | A cylinder with a standard bore of 2.085 inch is resized 0.020 to? | a. | 2.065 inch | b. | 2.110 inch | c. | 2.100 inch | d. | 2.105 | | | | | | | | | | |
| | 9. | The 4 cycle engine has power stroke occurring every ___ degrees of turn of the crankshaft. | a. | 120 | b. | 240 | c. | 360 | d. | 720 | | | | | | | | | | |
| | 10. | Viscosity index indicates? | a. | a sequence number for fuel | | b. | a micrometer reference point | | c. | a characteristic of oil | | d. | The pressure developed by the fuel pump | | | | |
| | 11. | When a piston has reached the top of its stroke it is known as? | a. | IRS | b. | ADC | c. | BDE | d. | TDC | | | | | | | | | | |
| | 12. | When air passes through the carbuerator venturi the___. | a. | velocity and pressure increases | | b. | velocity increases and pressure decreases | | c. | velocity and pressure decreases | | d. | velocity increases and pressure remains the constant | | | | |
| | 13. | Stroke is the total distance moved by the piston? | a. | in 1/2 revolution of the crankshaft | c. | in 2 revolutions of the crankshaft | | b. | in 1 revolution of the crankshaft | d. | in 3 revolutions of the crankshaft | | | | | | |
| | 14. | During the power stroke the piston is moving? | a. | toward TDC | c. | away from TDC | | b. | stops between TDC and BDC | d. | none of these are correct | | | | | | |
| | 15. | The tapered end of the crankshafts usually known as the ___ end. | a. | malleable | b. | magneto | c. | PTO | d. | cooling | | | | | | | | | | |
| | 16. | The mating surface of the valve face is? | a. | the valve seat | b. | the valve stem | c. | the valve head | d. | the valve margin | | | | | | | | | | |
| | 17. | The middle ring on the 4 cycle small gas engine piston is called a/an? | a. | o-ring | c. | oil ring | | b. | compression and/or scraper | d. | teflon ring | | | | | | |
| | 18. | The perforated ring on a small gas engine piston is the? | a. | compression ring | c. | scraper ring | | b. | oil ring | d. | second compression ring | | | | | | |
| | 19. | The compression ratio which generally has proven best for small air cooled gas engines is? | a. | one to one | b. | 3 to one | c. | 6 to one | d. | 9 to on | | | | | | | | | | |
| | 20. | When checking a cylinder for where the measurements should be taken in ____ locations. |