Mechanical Engineering Quiz 38
1 / 50
The impact strength of a material is an index of its ___________________?
2 / 50
The lenght of Cornish boiler is of the order of _________________?
3 / 50
Calorie is a measure of
4 / 50
Steam in water tube boiler as compared to fire tube boiler_________________?
5 / 50
The number of electrons in 1 cm3 of metal would be of the order of_______________?
6 / 50
Which of the following mechanisms produces mathematically an exact straight line motion____________________?
7 / 50
Isothermal compression effeicency can be attained by running the compressor__________________?
8 / 50
Free cutting steels_____________________?
9 / 50
Which of the following pipe joints would be suitable for pipes carrying steam_____________?
10 / 50
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then_________________?
11 / 50
Air refrigeration cycle is used in ____________________?
12 / 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_________________?
13 / 50
The probability distribution of activity times in PERT follows following distribution__________________?
14 / 50
Which of the following cycles is not a reversible cycle_____________________?
15 / 50
Which one of the following represents a group incentive plan ?
16 / 50
If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to___________________?
17 / 50
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is_________________?
18 / 50
The value of Poisson?s ratio for cast iron is_________________?
19 / 50
Frederick W. Taylor introduced a system of working known as________________?
20 / 50
If n = number of members andy = number of joints, then for a perfect frame, n =_________________?
21 / 50
Which of the following laws is applicable for the behavior of a perfect gas__________________?
22 / 50
Leakage past the piston rings and valve seats in I.C engines with increase in speed_______________?
23 / 50
Film coefficient is defined as Inside diameter of tube________________?
24 / 50
The first unclear power plant in India is located at____________________?
25 / 50
In queuing theory, the nature of the waiting situation can be studied and analysed mathematically if_________________?
26 / 50
The crown of the fire box is made hemispherical in order to___________________?
27 / 50
Diesel engines have low specific fuel consumption compared to petrol engine. This statement is____________________?
28 / 50
All radiations in a black body are___________________?
29 / 50
For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?
30 / 50
The center of gravity of a triangle lies at the point of __________________?
31 / 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__________________?
32 / 50
The reason for supercharging in any engine is to________________?
33 / 50
Phenomenon of choking in compressor means __________________?
34 / 50
Which of the following has least value of conductivity_________________?
35 / 50
The flow in which each liquid particle has a definite path and their paths do not cross each other is called__________________?
36 / 50
For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?
37 / 50
Reheating of steam under ideal conditions takes place at constant __________________?
38 / 50
The bulk modulus of elasticity with increase in pressure__________________?
39 / 50
Relationship between the number of links (L) and number of pairs (P) is___________________?
40 / 50
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be_________________?
41 / 50
Freon group of refrigerants are___________________?
42 / 50
Short horizontal lines on pressure-enthalpy chart show__________________?
43 / 50
Fuel oil consumption guarantees for I C engine are usually based on__________________?
44 / 50
The effective power of gas turbines is increased by adding the following in compressor__________________?
45 / 50
The moment on the pulley which produces rotation is called ___________________?
46 / 50
Poise is the unit of________________?
47 / 50
Chilled cast iron has____________________?
48 / 50
Choose the wrong statement ?
49 / 50
When a body floating in a liquid, is displaced slightly, it oscillates about _________________?
50 / 50
Isotopes of same elements have___________________?
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