Mechanical Engineering Quiz 9

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Mechanical Engineering Quiz 9

1 / 50

Which of the following varieties of coals is mostly used in steam boilers____________________?

2 / 50

Fuel consumption with increase in back pressure will________________?

3 / 50

An adiabatic wall is one which__________________?

4 / 50

Corrosion resistance of steel is increased by adding__________________?

5 / 50

If no resistance is encountered by displacement, such a substance is known as ___________________?

6 / 50

The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?

7 / 50

Exhaust pipes of engines are covered with insulating marterial in order to_________________?

8 / 50

Which of the following has highest specific strength of all structural materials__________________?

9 / 50

The direction of Corioli?s component of acceleration is the direction _____________________?

10 / 50

In a rigid link OA, velocity of A w.r.t. will be___________________?

11 / 50

Plastic flow in ductile materials_____________________?

12 / 50

Other method of reducing shock load in the above case can be_________________?

13 / 50

Queuing theory deals with problems of________________?

14 / 50

Slow plastic defomiation of metals under a constant stress is known as________________?

15 / 50

The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, ? ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be__________________?

16 / 50

Select the correct statement?

17 / 50

Effective moderators are those materials which contain____________________?

18 / 50

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

19 / 50

The unit of radio-activity is_____________?

20 / 50

Jam nut is a locking device in which _____________________?

21 / 50

Gamma iron exits at following temperature___________________?

22 / 50

The self-ignition temperature of diesel oil compared to petrol is_________________?

23 / 50

The following element can?t impart high strength at elevated temperature__________________?

24 / 50

Low specific speed of turbine implies it is__________________?

25 / 50

Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal_________________?

26 / 50

Permalloy is a___________________?

27 / 50

If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to___________________?

28 / 50

In precombustion chamber in diesel engine________________?

29 / 50

High carbon steel carries carbon %age c_________________?

30 / 50

Center of pressure compared to e.g. is___________________?

31 / 50

Maximum work is done in compressing air when the compression is_________________?

32 / 50

The region between the separation streamline and the boundary surface of the solid body is known as__________________?

33 / 50

Descripancies of bar chart techniques are________________?

34 / 50

The correct composition of Babbit metal is__________________?

35 / 50

In a typical medium speed 4-stroke cycle diesel engine the inlet valve_____________________?

36 / 50

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to_________________?

37 / 50

An isolated system is one in which_____________________?

38 / 50

The specific speed of turbine is defined as the speed of a unit___________________?

39 / 50

Carbon in iron is an example of__________________?

40 / 50

The diameters of fire tubes and superheaer tubes in locomotive boiler are_________________?

41 / 50

Barometric pressure is equal to_____________________?

42 / 50

PERT/CPM, techniques can be used for following applications____________________?

43 / 50

Efficiency of a thermal cycle increases by ________________?

44 / 50

Incomplete combustion can be best judged by__________________?

45 / 50

The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is________________?

46 / 50

An engine operates between temperatures of 900?Kandr2 and another engine between T2 and 400?K For both to do equal work, value of T2 will be________________?

47 / 50

Which of the following is the example of lever of first order__________________?

48 / 50

Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one_______________?

49 / 50

Corrundum contains more than 95% _____________________?

50 / 50

Pitch point on a cam is_________________?

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