Mechanical Engineering Quiz 36
1 / 50
In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be____________________?
2 / 50
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of____________________?
3 / 50
The mass number of a substance represents the sum of total number of___________________?
4 / 50
The ratio of endurance limit in shear to the endurance limit in flexure is__________________________?
5 / 50
Eye bolts are used for_________________?
6 / 50
The ratio of useful power; engine friction exhaust gas losses; cooling water, air and oil losses for a diesel engine is of the order of____________________?
7 / 50
Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?
8 / 50
Tungsten in high speed steel provides________________?
9 / 50
Duplex feed pumps are used in small steam boilers. These operate on the principle of_________________?
10 / 50
Choose the correct statement ________________?
11 / 50
For tight leakage joints, following type of thread is best suited ____________________?
12 / 50
The velocity of jet of water travelling out of opening in a tank filled with water is proportional to_________________?
13 / 50
Clapeyron equation is applicable for registration at___________________?
14 / 50
The two-bin system is concerned with_________________?
15 / 50
A fuel will detonate less if it has___________________?
16 / 50
Age-hardening is related with______________?
17 / 50
If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton?s law, the pressure in condenser is equal to__________________?
18 / 50
An important property of malleable cast iron in comparison to grey cast iron is the high___________________?
19 / 50
German silver contains_________________?
20 / 50
If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?
21 / 50
The optimum value of vane exit angle for a centrifugal pump impeller is_________________?
22 / 50
The net work input required for compressor with increase in clearance volume_____________________?
23 / 50
Compression loss in I.C engines occurs due to_________________?
24 / 50
Engine pistons ?are usually made of aluminium alloy because it_________________?
25 / 50
During storage, the heating value of coal __________________?
26 / 50
The shock absorbing capacity of a bolt can be increased by___________________?
27 / 50
A balloon lifting in air follows the following principle_____________________?
28 / 50
Diffuser in a compressor is used to _____________________?
29 / 50
One kilowatt-hour energy is equivalent to ________________?
30 / 50
In Halsey 50-50 plan, output standards are established______________?
31 / 50
In petrol engines, advancing the spark timing will_______________?
32 / 50
Accumulators should have adequate volume to store refrigerant charge at least_________________?
33 / 50
Axial flow pump is started with its delivery valve________________?
34 / 50
Superheated vapour behaves___________________?
35 / 50
Eutectoid steel contains following percentage of carbon_______________?
36 / 50
Which of the following is a vector quantity___________________?
37 / 50
The specific heat of air increases with increase in __________________?
38 / 50
The magneto in an automobile is basically__________________?
39 / 50
Aqua ammonia is used as refrigerant in the following type of refrigeration system_________________?
40 / 50
Sulphur in pig iron tends to make it___________________?
41 / 50
Cetane___________________?
42 / 50
Depth of hardness of steel is increased by addition of_________________?
43 / 50
Flow stress corresponds to___________________?
44 / 50
Neutral solution is one which has pH value__________________?
45 / 50
Surging is the phenomenon of___________________?
46 / 50
Which of the following processes are thermodynamically reversible___________________?
47 / 50
Locomotive type? boiler is__________________?
48 / 50
The coolant used in boiling water reactor is________________?
49 / 50
The designation M 33 x 2 of a bolt means___________________?
50 / 50
The ability of a material to resist softening at high temperature is known as____________________?
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