Mechanical Engineering Quiz 3

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Mechanical Engineering Quiz 3

1 / 50

Which of the following is not the correct method of increasing fatigue limit __________________?

2 / 50

Cork is a good insulator because it has___________________?

3 / 50

A one dimensional flow is one which_________________?

4 / 50

Air-fuel ratio in a jet engine will be of the order of__________________?

5 / 50

Flexible coupling is used because _____________________?

6 / 50

Which of the following elements does not impart hardness to steel__________________?

7 / 50

If a refractory contains high content of silicon, it means refractory is__________________?

8 / 50

The term scavenging is generally associated with______________________?

9 / 50

The e.g. of a link in any mechanism would experience_________________?

10 / 50

Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

11 / 50

Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?

12 / 50

The fast breeder reactor uses the following moderator__________________?

13 / 50

Which of the following has sliding motion________________?

14 / 50

In oilness bearings________________?

15 / 50

Rankine?s theory of failure is applicable for following type of materials___________________?

16 / 50

A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be_________________?

17 / 50

Iron is ____________________?

18 / 50

Strain is defined as the ratio of__________________?

19 / 50

Angle of dwell of cam is defined as the angle________________?

20 / 50

Which of the following is not the intensive property___________________?

21 / 50

For starting an axial flow pump, its delivery valve should be____________________?

22 / 50

The correct sequence for descending order of machinability is _____________________?

23 / 50

LMTD in case of counter flow heat exchanger as compared-to parallel flow heat exchanger is _________________?

24 / 50

According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?

25 / 50

The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?

26 / 50

Coulomb friction is the friction between _________________?

27 / 50

If a material fails below its yield point, failure would be due to___________________?

28 / 50

Metals are good conductors of heat because________________?

29 / 50

Idler pulley is used___________________?

30 / 50

For manometer, a better liquid combination is one having ___________________?

31 / 50

The value of Poisson?s ratio for steel is between_________________?

32 / 50

Modulus of rigidity is defined as the ratio of_________________?

33 / 50

The bulk modulus of elasticity___________________?

34 / 50

An important characteristic of absorption system of refrigeration is__________________?

35 / 50

Break-even analysis can be used for__________________?

36 / 50

Maximum principal stress theory is applicable for_____________________?

37 / 50

Gusset stays in a boiler are provided to____________________?

38 / 50

In vapour compression cycle, the conditii of refrigerant is saturated liquid________________?

39 / 50

Micromotion study involves following number of fundamental hand motions_______________?

40 / 50

Works cost implies________________?

41 / 50

Each fission of U235 produces following number of fast neutrons per fission________________?

42 / 50

The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00?C will _________________?

43 / 50

In the Halsey system of wage incentive plan, a worker is ________________?

44 / 50

The theoretically correct mixture of air and petrol is approximately ________________?

45 / 50

The critical pressure at which latent heat of vaporisation is zero is________________?

46 / 50

Acidic solution is one which has pH value__________________?

47 / 50

Pipes for bicycle frames are made of___________________?

48 / 50

Hart mechanism has________________?

49 / 50

The efficiency of Diesei cycle with decrease in cut off_________________?

50 / 50

The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called__________________?

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