Mechanical Engineering Quiz 38
1 / 50
Air refrigeration cycle is used in ____________________?
2 / 50
Leakage past the piston rings and valve seats in I.C engines with increase in speed_______________?
3 / 50
Which of the following has least value of conductivity_________________?
4 / 50
Isothermal compression effeicency can be attained by running the compressor__________________?
5 / 50
Steam in water tube boiler as compared to fire tube boiler_________________?
6 / 50
The value of Poisson?s ratio for cast iron is_________________?
7 / 50
Relationship between the number of links (L) and number of pairs (P) is___________________?
8 / 50
All radiations in a black body are___________________?
9 / 50
Calorie is a measure of
10 / 50
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is_________________?
11 / 50
The crown of the fire box is made hemispherical in order to___________________?
12 / 50
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be_________________?
13 / 50
Fuel oil consumption guarantees for I C engine are usually based on__________________?
14 / 50
In queuing theory, the nature of the waiting situation can be studied and analysed mathematically if_________________?
15 / 50
The center of gravity of a triangle lies at the point of __________________?
16 / 50
Short horizontal lines on pressure-enthalpy chart show__________________?
17 / 50
Film coefficient is defined as Inside diameter of tube________________?
18 / 50
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be_________________?
19 / 50
Phenomenon of choking in compressor means __________________?
20 / 50
The reason for supercharging in any engine is to________________?
21 / 50
Freon group of refrigerants are___________________?
22 / 50
Chilled cast iron has____________________?
23 / 50
If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to___________________?
24 / 50
Diesel engines have low specific fuel consumption compared to petrol engine. This statement is____________________?
25 / 50
Which of the following mechanisms produces mathematically an exact straight line motion____________________?
26 / 50
For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?
27 / 50
For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?
28 / 50
Which of the following cycles is not a reversible cycle_____________________?
29 / 50
Free cutting steels_____________________?
30 / 50
The impact strength of a material is an index of its ___________________?
31 / 50
Poise is the unit of________________?
32 / 50
Isotopes of same elements have___________________?
33 / 50
The number of electrons in 1 cm3 of metal would be of the order of_______________?
34 / 50
The first unclear power plant in India is located at____________________?
35 / 50
Which of the following laws is applicable for the behavior of a perfect gas__________________?
36 / 50
Which of the following pipe joints would be suitable for pipes carrying steam_____________?
37 / 50
The moment on the pulley which produces rotation is called ___________________?
38 / 50
Which one of the following represents a group incentive plan ?
39 / 50
The bulk modulus of elasticity with increase in pressure__________________?
40 / 50
The flow in which each liquid particle has a definite path and their paths do not cross each other is called__________________?
41 / 50
Choose the wrong statement ?
42 / 50
The effective power of gas turbines is increased by adding the following in compressor__________________?
43 / 50
In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is__________________?
44 / 50
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then_________________?
45 / 50
Frederick W. Taylor introduced a system of working known as________________?
46 / 50
Reheating of steam under ideal conditions takes place at constant __________________?
47 / 50
When a body floating in a liquid, is displaced slightly, it oscillates about _________________?
48 / 50
The lenght of Cornish boiler is of the order of _________________?
49 / 50
The probability distribution of activity times in PERT follows following distribution__________________?
50 / 50
If n = number of members andy = number of joints, then for a perfect frame, n =_________________?
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