Mechanical Engineering Quiz 2
1 / 50
A jet engine works on the principle of conservation of____________________?
2 / 50
In grey cast iron, carbon is present in the form of____________________?
3 / 50
A supercritical boiler is one that operates above the pressure and temperature of following values_____________________?
4 / 50
The elasticity of various materials is controlled by its___________________?
5 / 50
Gas turbine works on______________?
6 / 50
Condensing temperature in a refrigerator is the temperature_________________?
7 / 50
The rating of a diesel engine, with increase in airintlet temperature, will ___________________?
8 / 50
The specific heat of superheated steam in kcal/kg is generally of the order of___________________?
9 / 50
The criterion of the thermodynamic efficiency for rotary compressor is_________________?
10 / 50
Forces are called coplanar when all of them acting on body lie in __________________?
11 / 50
Amorphous material is one___________________?
12 / 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 _________________?
13 / 50
The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is______________________?
14 / 50
A material is known as allotropic or polymorphic if it __________________?
15 / 50
When two plates are butt together and riveted with cover plates with two rows of rivets, the joi;it is known as ___________________?
16 / 50
A hmh flame speed is obtained in diesel engine when air fuel ratio is_______________?
17 / 50
The buckling load for a given material depends on___________________?
18 / 50
In testing a material for endurance strength, it is subjected to_______________________?
19 / 50
Three different weights fall from a certain height under vacuum. They will take______________?
20 / 50
Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?
21 / 50
One time measurement unit (TMU) in method time measurement system equals______________?
22 / 50
The height of chimney in a power plant is governed by__________________?
23 / 50
White cast iron__________________?
24 / 50
With increase in load, radiant super heater has____________________?
25 / 50
The maximum strain energy that can be stored in a body is known as________________?
26 / 50
Isotropic materials are those which have the same ____________________?
27 / 50
Which of the following disciplines provides study of relative motion between the parts of a machine______________?
28 / 50
Centrifugal pump is started with its delivery valve __________________?
29 / 50
Which of the following materials is most elastic_________________?
30 / 50
Which of the following substance will have same percentage in both proximate and ultimate analysis___________________?
31 / 50
The center of percussion of the homogeneous rod of length L suspended at the top will be___________________?
32 / 50
Ram compression in turbojet involves____________________?
33 / 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____________________?
34 / 50
Which of the following is false statement in respect of differences between machine and structure___________________?
35 / 50
Work study is done with the help of_______________?
36 / 50
In forced circulation type boiler__________________?
37 / 50
The feed check valve is used in order to ______________________?
38 / 50
The thrust on the rotor in a centrifugal compressor is produced by________________?
39 / 50
The unit?of universal gas constant is___________________?
40 / 50
Thermal diffusivity is ____________________?
41 / 50
The probability distribution of project completion in PERT follows following distribution_________________?
42 / 50
In an isothermal process, the internal energy of gas molecules________________?
43 / 50
In a refrigeration cycle, the flow of refrigerant is controlled by___________________?
44 / 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______________?
45 / 50
The spark plug gap is normally maintained at________________?
46 / 50
The unit of overall coefficient of heat transfer is___________________?
47 / 50
An alien bolt is___________________?
48 / 50
More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than____________________?
49 / 50
Frictional force encountered after commencement of motion is called ___________________?
50 / 50
The following type of nut is used with alien bolt____________________?
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