Mechanical Engineering Quiz 3
1 / 50
In oilness bearings________________?
2 / 50
Modulus of rigidity is defined as the ratio of_________________?
3 / 50
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?
4 / 50
An important characteristic of absorption system of refrigeration is__________________?
5 / 50
Angle of dwell of cam is defined as the angle________________?
6 / 50
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called__________________?
7 / 50
Works cost implies________________?
8 / 50
The value of Poisson?s ratio for steel is between_________________?
9 / 50
The efficiency of Diesei cycle with decrease in cut off_________________?
10 / 50
Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?
11 / 50
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00?C will _________________?
12 / 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_________________?
13 / 50
If a refractory contains high content of silicon, it means refractory is__________________?
14 / 50
Idler pulley is used___________________?
15 / 50
Metals are good conductors of heat because________________?
16 / 50
Hart mechanism has________________?
17 / 50
Pipes for bicycle frames are made of___________________?
18 / 50
LMTD in case of counter flow heat exchanger as compared-to parallel flow heat exchanger is _________________?
19 / 50
Flexible coupling is used because _____________________?
20 / 50
The correct sequence for descending order of machinability is _____________________?
21 / 50
If a material fails below its yield point, failure would be due to___________________?
22 / 50
Gusset stays in a boiler are provided to____________________?
23 / 50
The critical pressure at which latent heat of vaporisation is zero is________________?
24 / 50
The fast breeder reactor uses the following moderator__________________?
25 / 50
For starting an axial flow pump, its delivery valve should be____________________?
26 / 50
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?
27 / 50
Which of the following is not the intensive property___________________?
28 / 50
Maximum principal stress theory is applicable for_____________________?
29 / 50
A one dimensional flow is one which_________________?
30 / 50
Strain is defined as the ratio of__________________?
31 / 50
Acidic solution is one which has pH value__________________?
32 / 50
Iron is ____________________?
33 / 50
Which of the following has sliding motion________________?
34 / 50
In the Halsey system of wage incentive plan, a worker is ________________?
35 / 50
Which of the following is not the correct method of increasing fatigue limit __________________?
36 / 50
Micromotion study involves following number of fundamental hand motions_______________?
37 / 50
Each fission of U235 produces following number of fast neutrons per fission________________?
38 / 50
Cork is a good insulator because it has___________________?
39 / 50
The e.g. of a link in any mechanism would experience_________________?
40 / 50
Break-even analysis can be used for__________________?
41 / 50
The term scavenging is generally associated with______________________?
42 / 50
The theoretically correct mixture of air and petrol is approximately ________________?
43 / 50
Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?
44 / 50
In vapour compression cycle, the conditii of refrigerant is saturated liquid________________?
45 / 50
Coulomb friction is the friction between _________________?
46 / 50
For manometer, a better liquid combination is one having ___________________?
47 / 50
The bulk modulus of elasticity___________________?
48 / 50
Which of the following elements does not impart hardness to steel__________________?
49 / 50
Rankine?s theory of failure is applicable for following type of materials___________________?
50 / 50
Air-fuel ratio in a jet engine will be of the order of__________________?
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