Related Questions
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4
For a perfect gas, according to Boyle's law (where p = Absolute pressure, v = Volume, and T = Absolute temperature)
A. p v = constant, if T is kept constant
B. v/T = constant, if p is kept constant
C. p/T = constant, if v is kept constant
D. T/p = constant, if v is kept constant
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4
Which of the following has the highest calorific value?
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Reversed joule cycle is called
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4
The relation between equivalent length (L) and actual length (l) of a column for both ends fixed is
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The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as
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4
A beam which is fixed at one end and free at the other is called
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4
Workdone during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)
A. (p1 v1 - p2 v2)/(γ - 1)
B. [m R (T1 - T2)] /(γ - 1)
C. [m R T1/(γ - 1)][1 - (p2 v2 /p1 v1)]
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4
Diesel cycle consists of __________ processes.
A. Two constant volume and two isentropic
B. Two constant pressure and two isentropic
C. Two constant volume and two isothermal
D. One constant pressure, one constant volume and two isentropic
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The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as
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The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
D. Increase/decrease depending on application
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The calorific value of gaseous fuel is expressed in
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When the gas is heated at constant pressure, the heat supplied
A. Increases the internal energy of the gas
B. Increases the temperature of the gas
C. Does some external work during expansion
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One kg of carbon monoxide requires _______kg of oxygen to produce 11/7 kg of carbon dioxide gas.
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In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.
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The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as
A. Law of equipartition of energy
B. Law of conservation of energy
C. Law of degradation of energy
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4
Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the un-punched plate in
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The neutral axis of the cross-section a beam is that axis at which the bending stress is
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The ratio of the largest load in a test to the original cross-sectional area of the test piece is called
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When a body is subjected to two equal and opposite pushes, as a result of which the body tends to reduce its length, then
A. The stress and strain induced is compressive
B. The stress and strain induced is tensile
C. Both A and B is correct
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The bending stress in a beam is _________ section modulus.
A. Inversely proportional to two times
B. Directly proportional to
C. Inversely proportional to
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4
The natural solid fuel is
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The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called
A. Specific heat at constant volume
B. Specific heat at constant pressure
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A double strap butt joint with equal straps is
A. Always in single shear
B. Always in double shear
C. Either in single shear or double shear
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A steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce
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First law of thermodynamics deals with
B. Conservation of momentum
D. Conservation of energy
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Which of the following gas has a minimum molecular mass?
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The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
A. One right angled triangle
B. Two right angled triangles
C. One equilateral triangle
D. Two equilateral triangles
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For a simply supported beam of length l, when a concentrated load W is applied in the centre of the beam, the maximum deflection is
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The buckling load for a given material depends on
A. Slenderness ratio and area of cross-section
B. Poisson's ratio and modulus of elasticity
C. Slenderness ratio and modulus of elasticity
D. Slenderness ratio, area of cross-section and modulus of elasticity
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If in the equation pvn = C, the value of n = ∝, then the process is called
A. Constant volume process
C. Constant pressure process