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