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.Management Sciences
Category: Mechanical Engineering Mcqs
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by_________________?
A. decreasing the cross-section area of’ bar
B. increasing the cross-section area of bar
C. remain unaffected with cross-section area
D. would depend upon other factors
E. none of the above
Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?
A. surface tension
B. viscosity
C. friction
D. cohesion
E. adhesion
The m.e.p. of a diesel cycle having fixed compression ratio with increase in cut-off will_________________?
A. increase
B. decreae
C. be unaffected
D. depend on other factors
E. unpredictable
the chain is constrained when_________________?
A. L.H.S. = R.H.S.
B. L.H.S. R.H.S.
D. there is no such criterion for checking above requirement
E. none of the above
A diathermic wall is one which____________________?
A. prevents thermal interaction
B. permits thermal interaction
C. encourages thermal interaction
D. discourages thermal interaction
E. does not exist
The bulk modulus of elasticity with increase in pressure__________________?
A. increases
B. decreases
C. remains constant
D. increases first up to certain limit and then decreases
E. unpredictable
The value of n = 1 in the poly tropic process indicates it to be __________________?
A. reversible process
B. isothermal process
C. adiabatic process
D. irreversible process
E. free expansion process
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem_________________?
A. Venturimeter
B. Orifice plate
C. nozzle
D. pitot tube
E. all of the above
Which of the following meters is not associated with viscosity____________________?
A. Red wood
B. Say bolt
C. Engler
D. Orsat
E. none of the above
The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight________________?
A. of same magnitude as that of bar and applied at the lower end
B. half the weight of bar applied at lower end
C. half of the square of weight of bar applied at lower end
D. one-fourth of weight of bar applied at lower end
E. none of the above
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