All the four operations in two stroke engine are performed in following number of revolutions of crank shaft______________________?

Related Mcqs:

1. The thermal efficiency of a petrol engine of two stroke with crank case scavenging as compared to four stroke petrol engine with same comperssion ratio will be_____________________?

   A. higher
   B. lower
   C. same
   D. depends on size of engine
   E. unpredictable.

2. For same power and same speed, the flywheel of a four stroke engine as compared to two-stroke I.C. engine will be________________?

   A. smaller
   B. bigger
   C. same size
   D. dependent on other engine parameters
   E. unpredictable

3. For the same size and weight, a two stroke engine as compared to four stroke engine will generate power_________________?

   A. about twice
   B. about 0.5 times
   C. nearly equal
   D. about 1.7 times
   E. about 5 times

4. The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft___________________?

   A. 1/2
   B. 1
   C. 2
   D. 4
   E. 8

5. A two stroke crank compressed engine has following ports in the cylinder_______________?

   A. suction port and exhaust port
   B. transfer port only
   C. suction port and transfer port
   D. transfer port and exhaust port
   E. suction port, exhaust port and transfer port

6. Scavenging air is supplied to a two-stroke engine at a density greater than that of atmosphere. This means the engine is__________________?

   A. Supercharged
   B. Not supercharged
   C. Charged
   D. Supercharged provided its speed is low

7. The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?

   A. 180°
   B. 125°
   C. 235°
   D. 200°
   E. 275°

8. The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at __________________?

   A. 1500 rpm
   B. 750 rpm
   C. 3000 rpm
   D. any value independent of engine speed
   E. none of the above

9. The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?

   A. more
   B. less
   C. same
   D. more upto some load and then less
   E. it may be less or more depending on several other factors

10. A 4-stroke diesel engine needs about following amount of air_________________?

    A. 75 cc per min. per h.p.
    B. 750 cc per min. per h.p.
    C. 7500 cc per min. per h.p.
    D. 75000 cc per min. per h.p.
    E. 750000 cc per min. per h.p