Mechanical Engineering Quiz 2

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Mechanical Engineering Quiz 2

1 / 50

In an isothermal process, the internal energy of gas molecules________________?

2 / 50

The unit?of universal gas constant is___________________?

3 / 50

If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix i and o stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity______________?

4 / 50

Forces are called coplanar when all of them acting on body lie in __________________?

5 / 50

Thermal diffusivity is ____________________?

6 / 50

Which of the following materials is most elastic_________________?

7 / 50

The spark plug gap is normally maintained at________________?

8 / 50

Centrifugal pump is started with its delivery valve __________________?

9 / 50

White cast iron__________________?

10 / 50

Which of the following is false statement in respect of differences between machine and structure___________________?

11 / 50

Isotropic materials are those which have the same ____________________?

12 / 50

The feed check valve is used in order to ______________________?

13 / 50

The thrust on the rotor in a centrifugal compressor is produced by________________?

14 / 50

An alien bolt is___________________?

15 / 50

The maximum strain energy that can be stored in a body is known as________________?

16 / 50

The height of chimney in a power plant is governed by__________________?

17 / 50

Which of the following disciplines provides study of relative motion between the parts of a machine______________?

18 / 50

The elasticity of various materials is controlled by its___________________?

19 / 50

Three different weights fall from a certain height under vacuum. They will take______________?

20 / 50

Work study is done with the help of_______________?

21 / 50

The criterion of the thermodynamic efficiency for rotary compressor is_________________?

22 / 50

The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is______________________?

23 / 50

Ram compression in turbojet involves____________________?

24 / 50

Which of the following substance will have same percentage in both proximate and ultimate analysis___________________?

25 / 50

In testing a material for endurance strength, it is subjected to_______________________?

26 / 50

A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will____________________?

27 / 50

The specific heat of superheated steam in kcal/kg is generally of the order of___________________?

28 / 50

Condensing temperature in a refrigerator is the temperature_________________?

29 / 50

Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?

30 / 50

When two plates are butt together and riveted with cover plates with two rows of rivets, the joi;it is known as ___________________?

31 / 50

A jet engine works on the principle of conservation of____________________?

32 / 50

The following type of nut is used with alien bolt____________________?

33 / 50

A material is known as allotropic or polymorphic if it __________________?

34 / 50

The probability distribution of project completion in PERT follows following distribution_________________?

35 / 50

More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than____________________?

36 / 50

One time measurement unit (TMU) in method time measurement system equals______________?

37 / 50

A supercritical boiler is one that operates above the pressure and temperature of following values_____________________?

38 / 50

The buckling load for a given material depends on___________________?

39 / 50

The rating of a diesel engine, with increase in airintlet temperature, will ___________________?

40 / 50

A hmh flame speed is obtained in diesel engine when air fuel ratio is_______________?

41 / 50

Amorphous material is one___________________?

42 / 50

In forced circulation type boiler__________________?

43 / 50

Gas turbine works on______________?

44 / 50

In grey cast iron, carbon is present in the form of____________________?

45 / 50

Frictional force encountered after commencement of motion is called ___________________?

46 / 50

The center of percussion of the homogeneous rod of length L suspended at the top will be___________________?

47 / 50

The unit of overall coefficient of heat transfer is___________________?

48 / 50

In a refrigeration cycle, the flow of refrigerant is controlled by___________________?

49 / 50

With increase in load, radiant super heater has____________________?

50 / 50

The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be _________________?

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