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