Related Questions
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The hyperbolic process is governed by
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Which of the following has the highest calorific value?
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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 shear stress is
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
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
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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
The compression ratio for petrol engines is
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The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is
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The atomic mass of nitrogen is __________ oxygen.
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When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
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4
In order to know whether a column is long or short, we must know its
A. Ultimate shear stress of the column
C. Torque resisting capacity
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The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is
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Strain is defined as the ratio of
A. Change in volume to original volume
B. Change in length to original length
C. Change in cross-sectional area to original cross-sectional area
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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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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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A beam is loaded as cantilever. If the load at the end is increased, the failure will occur
B. At the tip below the load
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An adiabatic process is one in which
A. No heat enters or leaves the gas
B. The temperature of the gas changes
C. The change in internal energy is equal to the mechanical workdone
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4
A riveted joint in which the number otrivets decrease from innermost to outer most rows is called
C. Crisscross riveted joint
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When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the
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The radius of the Mohrs circle in the given figure is equal to
A. Sum of two principal stresses
B. Difference of two principal stresses
C. Half the sum of two principal stresses
D. Half the difference of two principal stresses
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In the below figure, the stress corresponding to point D is
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Formula based on IS codes is based on
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The general gas energy equation is (where Q1 - 2 = Heat supplied, dU = Change in internal energy, and W1 - 2 = Work done in heat units)
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The maximum tangential stress in a thick cylindrical shell is always _________ the internal pressure acting on the shell.
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Which of the following gas has the highest calorific value?
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The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
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The fuel mostly used in cement industry and in metallurgical processes is
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A tri-atomic molecule consists of __________ atoms.
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The change in the unit volume of a material under tension with increase in its Poisson's ratio will
D. Increase initially and then decrease
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In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is
D. More/less depending on composition
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A concentrated load is one which
A. Acts at a point on a beam
B. Spreads non-uniformly over the whole length of a beam
C. Spreads uniformly over the whole length of a beam
D. Varies uniformly over the whole length of a beam