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.Management Sciences
Category: Mechanical Engineering Mcqs
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
In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called_____________?
A. creeping
B. yielding
C. breaking
D. plasticity
E. none of the above
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?
A. centrifugal
B. axial flow
C. reciprocating
D. mixed flow
E. none of the above
In a tensile test, near the elastic limit zone, the______________?
A. tensile strain increases more quickly
B. tensile strain decreases more quickly
C. tensile strain increases in proportion to the stress
D. tensile strain decreases in proportion to the stress
E. tensile strain remains constant
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