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.Management Sciences
Category: Mechanical Engineering Mcqs
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called__________________?
A. pressure ratio
B. pressure coefficient
C. degree of reaction
D. slip factor
E. stage factor
For the same size and weight, a two stroke engine as compared to four stroke engine will generate power_________________?
A. about twice
B. about 0.5 times
C. nearly equal
D. about 1.7 times
E. about 5 times
For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?
A. any gas
B. saturated steam
C. water
D. perfect gas
E. superheated steam
The number of links and instantaneous centers in a reciprocating engine mechanism are ___________________?
A. 4, 4
B. 4, 5
C. 5, 4
D. 6, 4
E. 4, 6
The vapor compression refrigerator employs the following cycle_________________?
A. Rankine
B. Carnot
C. Reversed Rankine
D. Brayton
E. Reversed Carnot
Coefficient of friction is the_________________?
A. angle between normal reaction and the resultant of normal reaction and the limiting friction
B. ratio of limiting friction and normal reaction
C. the friction force acting when the body is just about to move
D. the friction force acting when the body is in motion
E. tangent of angle of repose
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately____________________?
A. 1 mm
B. 5 mm
C. 10 mm
D. 20 mm
E. 30 mm
Intensive property of a system is one whose value____________________?
A. depends on the mass of the system, like volume
B. does not depend on the mass of the system, like temperature, pressure, etc
C. is not dependent on the path followed but on the state
D. is dependent on the path followed and not on the state
E. remains constant
In hydrostatic bearings ____________________?
A. the Oil film pressure is generated only by the rotation of the journal
B. the oil film is maintained by supplying oil under pressure
C. do not require external supply of lubricant
D. grease is used for lubrication
E. none of the above
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