All heat engines utilize_____________________? - PakMcqs

Related Mcqs:

1. Diesel engines as compared to petrol engines require ______________________?

   A. bigger flywheel B. smaller flywheel C. same size flywheel D. no flywheel E. flywheel whose size may be less or more depending on several other fac-tors...

2. Most high speed compression engines operate on __________________?

   A. Diesel cycle B. Otto cycle C. Dual combustion cycle D. Special type of air cycle E. Carnot cycle...

3. Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads________________?

   A. the friction is high B. the friction is unpredictable C. the small difference in cooling water temperature or in internal friction has a disproportionate effect D. the engine is rarely operated E. none of the above...

4. For the same power developed in I.C. engines, the cheaper system is_____________?

   A. naturally aspirated B. supercharged C. centrifugal pump D. turbo charger E. none of the above...

5. Combustion in compression ignition engines is____________________?

   A. homogeneous B. heterogeneous C. both A. and B. D. laminar E. turbulent...

6. In order to prevent knock in the S.I. engines, the charge away from the spark plug should have___________________?

   A. low temperature B. low density C. long ignition delay D. rich mixture E. all of the above...

7. Diesel engines have low specific fuel consumption compared to petrol engine. This statement is____________________?

   A. not true B. true at full load C. true at part load D. true at both part and full load E. there could not be any such criterion...

8. Air injection in I.C. engines refers to injection of___________________?

   A. air only B. liquid fuel only C. liquid fuel and air D. supercharging E. does not exist...

9. Solid injection in I.C. engines refers to injection of________________?

   A. liquid fuel only B. liquid fuel and air C. solid fuel D. solid fuel and air E. does not exist...

10. For low speed operation or for idling in petrol engines, the engine requirements are for_______________?

    A. lean mixture B. theoretically correct mixture C. rich mixture D. any type of mixture E. lean/rich mixture depending upon capacity of engine...