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Mechanical Engineering Quiz 33

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Mechanical Engineering Quiz 33

1 / 50

For minimum work in multistage compression, assuming same index of compression in all stages_________________?

2 / 50

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

3 / 50

The nuclear energy is measured as__________________?

4 / 50

In hydrostatic bearings ____________________?

5 / 50

Positive slack on a PERT indicates that project is________________?

6 / 50

In heat exchangers, degree of approach is defined as the difference between temperatures of________________?

7 / 50

The dry saturated steam at very high pressure (150-200 kg/cm2) when throttled to atmosphere will become_______________?

8 / 50

For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be____________________?

9 / 50

The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line________________?

10 / 50

In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered It can be done by_______________?

11 / 50

A cam mechanism imparts following motion___________________?

12 / 50

Critical pressure of a liquid is the pressure_________________?

13 / 50

The fusible plug in small boilers is located ________________?

14 / 50

In petrol engine, increase of cooling water temperature will_________________?

15 / 50

The centre of gravity of the volume of the liquid displaced by an immersed body is called ___________________?

16 / 50

Reducing suction pressure in refrigeration cycle_________________?

17 / 50

Mercury does not wet glass. This is due to property of liquid known as__________________?

18 / 50

Which of the following element results in presence of free graphite in C.I_________________?

19 / 50

The value of Prandtl number for air is about _______________________?

20 / 50

By severely deforming a metal in a particular direction it becomes _________________?

21 / 50

Which of the following is not a vector quantity __________________?

22 / 50

Cast iron is characterised by minimum of following %age of carbon_________________?

23 / 50

Detonation can be controlled by_____________________?

24 / 50

Fighter bombers use following type of engine __________________?

25 / 50

High specific speed of a pump implies it is_____________________?

26 / 50

Which one of the following statements is not correct_________________?

27 / 50

Refrigeration in aeroplanes usually employs the following refrigerant___________________?

28 / 50

According to which law, all perfect gases change in volume by l/273th of their original volume at 0?C for every 1?C change in temperature when pressure remains constant ____________________?

29 / 50

A stud________________________?

30 / 50

The ultimate strength of steel in tension in comparison to shear is in the ratio of__________________?

31 / 50

Atmospheric pressure is equal to____________?

32 / 50

Crowning on pulleys helps__________________?

33 / 50

An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has___________________?

34 / 50

Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is__________________?

35 / 50

Thermal power plant works on______________?

36 / 50

Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?

37 / 50

Ignition quality of diesel-fuel oil is expressed by an index called__________________?

38 / 50

The unit of time in S.I. units is__________________?

39 / 50

Which of the following meters is not associated with viscosity____________________?

40 / 50

During throttling process___________________?

41 / 50

Pearlite is a combination of___________________?

42 / 50

Piezometer is used to measure_____________________?

43 / 50

The example of lower pair is_______________?

44 / 50

In petrol engines, the maximum power is developed corresponding to relative fuel air ratio of________________?

45 / 50

The steam temperature with increase in load in case of a boiler fitted with radiation super heater________________?

46 / 50

A pair of smith?s tongs is an example of the lever of__________________?

47 / 50

Typewriter constitutes__________________?

48 / 50

Pitot tube is used for measurement of_________________?

49 / 50

The capacity of a compressor is 5 m /mih. 5 m /min refers to_______________?

50 / 50

Maximum percentage of carbon in austenite is______________?

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