Which is more viscous lub oil_________________?

Related Mcqs:

1. 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

2. Pick up the wrong statement about supercharging __________________?

   A. supercharging reduces knocking in diesel engines
   B. there can be limited supercharging in petrol engines because of detonation
   C. supercharging at high altitudes is essential
   D. supercharging results in fuel economy
   E. supercharging is essential in aircraft engines

3. If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the %age increase in efficiency will be________________?

   A. 2%
   B. 4%
   C. 8%
   D. 14%
   E. 27%.

4. The output of a diesel engine can be increased without increasing the engine revolution or size in following way_________________?

   A. feeding more fuel
   B. increasing flywheel size
   C. heating incoming air
   D. scavenging
   E. supercharging

5. The mean effective pressure obtained from engine indicator indicates the________________?

   A. maximum pressure developed
   B. minimum pressure
   C. instantaneous pressure at any instant
   D. exhaust pressure
   E. average pressure

6. In the opposed piston diesel engine, the combustion chamber is located________________?

   A. above the piston (/;) below the piston
   C. between the pistons
   D. any when
   E. there is no such criterion

7. The firing order in a six stroke I.C. engine is_________________?

   A. 1-3-6-5-2-4
   B. 1-4-2-5-6-3
   C. 1-6-2-5-4-3
   D. 1-5-2-6-3-4
   E. 1-5-3-4-2-6

8. The system of lubrication used for motor cycles and scooters is by________________?

   A. forced lubrication system
   B. splash lubrication
   C. applying grease under pressure
   D. wet sump method
   E. mixing about 5% lub oil with petrol

9. Pick up false statement?

   A. For petrol and large gas engines, quantity governingds preferred
   B. In quantity governing, air fuel ratio is almost constant and quantity of charge is changed depending on load
   C. In hit and miss governing, fuel supply is completely cut off during one or more number of cycles
   D. In quality governing, quantity of fuel is varied to suit the load and total charge of air is varied
   E. For close regulation of speed, combination of both quality and quantity governing is used

10. The average calorific value of wood is about : __________?

    A. 33500 kj/kg
    B. 25000 kj/kg
    C. 23000 kj/kg
    D. 19700 kj/kg

    Submitted by: Faheem Zaman Dhaunroo