Related Questions
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4
If Th is the torque resisting capacity of a hollow shaft and Ts is that of a solid shaft, of the same material, length and weight. Then,
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4
One molecule of oxygen consists of __________ atoms of oxygen.
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4
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
A. Dual cycle, Diesel cycle, Otto cycle
B. Otto cycle, Diesel cycle, Dual cycle
C. Dual cycle, Otto cycle, Diesel cycle
D. Diesel cycle, Otto cycle, Dual cycle
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4
The efficiency of Joule cycle is
A. Greater than Carnot cycle
B. Less than Carnot cycle
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4
The main cause for the irreversibility is
A. Mechanical and fluid friction
B. Unrestricted expansion
C. Heat transfer with a finite temperature difference
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4
The materials which exhibit the same elastic properties in all directions are called
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4
The compression ratio for Diesel engines is
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The gas turbine cycle with regenerator improves
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4
The compression ratio for petrol engines is
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4
Elasticity of Mild Steel specimen is defined by
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4
If Kh is the torque resisting capacity of a hollow shaft and Ks is that of a solid shaft, of the same material, length and weight. Then,
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4
In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called
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4
Carnot cycle has maximum efficiency for
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4
Slenderness of a column is zero when
B. Column is supported on all sides throughout the length
C. Length is equal to radius of gyration
D. Length is twice the radius of gyration
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4
The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is __________ at the fixed end.
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4
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is
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4
According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.
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4
A definite area or a space where some thermodynamic process takes place is known as
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4
When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from the neutral axis.
B. Directly proportional to
C. Inversely proportional to
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4
The shear force diagram of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length will be
A. A right angled triangle
C. An equilateral triangle
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4
When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is
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4
The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents
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4
A bar of copper and steel form a composite system, which is heated to a temperature of 40°C. The stress induced in the copper bar will be
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4
In a free expansion process,
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In the below figure, curve D represents_________.
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When a body is subjected to biaxial stress i.e. direct stresses (σx) and (σy) in two mutually perpendicular planes accompanied by a simple shear stress (τxy), then maximum normal stress is
A. (σx + σy)/2 + (1/2) × √[(σx - σy)² + 4 τ²xy]
B. (σx + σy)/2 - (1/2) × √[(σx - σy)² + 4 τ²xy]
C. (σx - σy)/2 + (1/2) × √[(σx + σy)² + 4 τ²xy]
D. (σx - σy)/2 - (1/2) × √[(σx + σy)² + 4 τ²xy]
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4
The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of
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4
The ultimate analysis of coal consists of the determination of the percentage of
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According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.
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4
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle
A. Combustion is at constant volume
B. Expansion and compression are isentropic
C. Maximum temperature is higher
D. Heat rejection is lower