Related Questions
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4
One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
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4
A material obeys hooks law up to
D. Limit of proportionality
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4
The atomic mass of nitrogen is __________ oxygen.
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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
The natural solid fuel is
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The efficiency of Stirling cycle is __________ Carnot cycle.
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4
The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to
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4
The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)
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4
When the gas is cooled at constant pressure,
A. Its temperature increases but volume decreases
B. Its volume increases but temperature decreases
C. Both temperature and volume increases
D. Both temperature and volume decreases
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4
The efficiency of Diesel cycle depends upon
D. Cut-off ratio and compression ratio
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4
In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be
D. Double all the dimensions
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4
One kg of hydrogen requires 8 kg of oxygen and produces
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4
If the depth is kept constant for a beam of uniform strength, then its width will vary in proportional to
A. Bending moment (i.e. M)
B. Bending moment² (i.e. M²)
C. Bending moment³ (i.e. M³)
D. Bending moment⁴ (i.e. M⁴)
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4
If in the equation pvn = C, the value of n = ∝, then the process is called
A. Constant volume process
C. Constant pressure process
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4
The increase in entropy of a system represents
A. Increase in availability of energy
B. Increase in temperature
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Which of the following is the extensive property of a thermodynamic system?
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In the below figure, curve D represents_________.
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Reversed joule cycle is called
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The value of cp/cv for air is
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When both ends of a column are fixed, the effective length is
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The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is
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The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
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4
Which of the following materials is most elastic?
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When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the maximum normal stress i
A. (σx/2) + (1/2) × √(σx² + 4 τ²xy)
B. (σx/2) - (1/2) × √(σx² + 4 τ²xy)
C. (σx/2) + (1/2) × √(σx² - 4 τ²xy)
D. (1/2) × √(σx² + 4 τ²xy)
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4
Diamond riveted joint can be adopted in the case of following type of joint
C. Double riveted lap joints
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4
The value of shear stress which is induced in the shaft due to the applied couple varies
A. From maximum at the centre to zero at the circumference
B. From zero at the centre to maximum at the circumference
C. From maximum at the centre to minimum at the circumference
D. From minimum at the centre to maximum at the circumference
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4
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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The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)
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The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
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The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
D. Increase/decrease depending on application