Mechanical Engineering Quiz 21

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Mechanical Engineering Quiz 21

1 / 50

Film boling occurs at _______________________?

2 / 50

A closed gas turbine in which fuel is burnt directly in the air is not possible because of__________________?

3 / 50

The energy of molecular motion appears as________________?

4 / 50

For which of the following substances, the gas laws can be used with minimum error_________________?

5 / 50

For combustion of a fuel, following is essential_____________________?

6 / 50

Hot wire anemometer is used to measure_______________?

7 / 50

A nuclear fission produces energy of following order in MeV___________________?

8 / 50

Poisson?s ratio is defined as the ratio of_________________?

9 / 50

Longitudinal stress in a thin cylinder is__________________?

10 / 50

In natural circulation type boiler _______________?

11 / 50

Annealing of white cast iron results in production of_________________?

12 / 50

Pick up the correct step used for scheduling a project by C.P.M.__________________?

13 / 50

Two plates spaced 150 mm apart are maintained at 1000?C and 70? The heat transfer will take place mainly by ___________________?

14 / 50

In the Emerson efficiency plan, a worker receives only his daily wage and no bonus is paid till his efficiency reaches__________________?

15 / 50

A rocket works with maximum overall efficiency when air craft velocity is equal to the_________________?

16 / 50

Pessimistic time is___________________?

17 / 50

According to Recardo?s theory, detonation occurs due to______________________?

18 / 50

For the same compression ratio_____________________?

19 / 50

The effort required to lift a load W on a screw jack with helix angle a and angle of friction

20 / 50

In perpetual inventory control, the material is checked as it reaches its__________________?

21 / 50

In elliptical trammels_________________?

22 / 50

Mild steel belongs to the following category___________________?

23 / 50

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

24 / 50

For burning 1 kg of carbon to CO as per chemically correct combusiton, amount of air required is___________________?

25 / 50

Large forgings, crank shafts, axles normally contain carbon up to________________?

26 / 50

The approximate straight line mechanism is a____________________?

27 / 50

A rocket engine for the combustion of its fuel_____________________?

28 / 50

Thermal efficiency of well maintained boiler will be of the order___________________?

29 / 50

A panto graph is a mechanism with___________________?

30 / 50

In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?

31 / 50

For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?

32 / 50

With increase in speed of vehicle, the back pressure will________________?

33 / 50

Which is false statement about tempering. Tempering is done to_______________?

34 / 50

Coaxing is the procedure of increasing__________________?

35 / 50

Dimensions of surface tension are___________________?

36 / 50

Hard coke is produced by carborisation of coal at_______________?

37 / 50

If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be_______________?

38 / 50

Cold working________________?

39 / 50

Formation of frost on evaporator in refrigerator ________________?

40 / 50

The shear plane in case of bolts should_________________?

41 / 50

The basic constituents of Hastelloy are_________________?

42 / 50

Tertiary air is the air used to____________________?

43 / 50

Gas turbine works on_______________?

44 / 50

In the aircraft propellers __________________?

45 / 50

The most effective inhibitor of grain growth, when added in small quantities is__________________?

46 / 50

Practical fluids___________________?

47 / 50

Aluminium bronze contains__________________?

48 / 50

The thermal efficiency of a diesel engine is of the order of_________________?

49 / 50

The center of pressure of a surface subjected to fluid pressure is the point_______________?

50 / 50

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction___________________?

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