Q.25 Which of the following statements holds true, according to Kelvin Planck’s statement?Ans 1. A heat engine must exchange heat from a single heat reservoir.2. It restricts the engine to have mechanical efficiency lesser than unity.3. Perpetual motion ...
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Q.24 The point of intersection of the line of action of the resultant hydrostatic force and the submerged surface is called _____.Ans 1. centre of pressure2. centre of gravity3. centre of buoyancy4. centre of massCorrect Ans Provided: 1
Q.28 If difference of axial components of velocity at inlet and outlet of a de-Laval turbine is found to be 120 m/s and mass flow rate of steam is 7 kg/s then axial thrust on the rotor ...
Q.26 A solid circular shaft of diameter d is subjected to the twisting moment T. Which of the following relations can be used to determine the stress developed in the shaft?Ans 1.2.
Q.31 Latent heat of vaporisation is NOT the _______.Ans 1. sum of internal latent heat and external work of evaporation2. heat added at constant temperature of 100°C to convert water into steam3. heat required for complete conversion of ...
Q.27 Heat addition during the constant pressure process is equal to ________.Ans 1. change in entropy2. specific heat3. change in enthalpy4. change in internal energyCorrect Ans Provided: 3
Q.30 Which of the following about work transfer is NOT correct?Ans 1. Work is a transient phenomenon.2. Work transfer is a thermodynamic property.3. Work is given by the area under the curve on p-V diagram in case of ...
Q.17 Which of the following equations is used to calculate major losses in pipes?Ans 1. Darcy-Weisbach equation2. Continuity equation3. Reynolds’s equation4. Momentum equationCorrect Ans Provided: 1
Q.8 A closed vessel contains 5 kg of air, and 50 kJ of heat is given to it. If 75 kJ of work is done by the system, then which of the following is true?(Take Cp = ...
Q.16 A cantilever beam carries a uniformly distributed load over a span of 1 m as shown in the figure below. The reactive moment at point A is _________.Ans 1. 30 kN-m2. 0 kN-m3. 5 ...
