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ESE ME: Thermal Science Champion Quiz 3

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Question 1

If a pure substance is below the triple point temperature, the solid on being heated will only

Question 2

For an ideal gas with constant values of specific heats, for calculation of the specific enthalpy.

Question 3

If power developed by a turbine in a certain steam power plant is 1200kW. Heat supplied to boiler is 3360 kJ/kg. The heat rejected by the system to cooling water is 2520 kJ/kg. and feed pump work required to condensate back into boiler is 6 kW then the mass rate of flow through the cycle will be

Question 4

Assertion (A) : A mixture of liquid air an air cannot to considered as pure substance.
Reason (R) : Proportions of oxygen and Nitrogen differ in liquid and gaseous states in equilibrium.

Question 5

For a given compression ratio, which of the following ideal cycles have equal thermal efficiency

Question 6

An Otto cycle has a compression ratio of 8. If 250 kJ of work is extracted from the cycle, the heat rejected by the cycle is

Question 7

An air standard Otto cycle has volumetric compression ratio of 6, the lowest cycle pressure of 0.1 MPa and operates between temperature limits of 27 °C and 1569 °C. What is the temperature after isentropic expansion if ratio of specific heats is 1.4?

Question 8

The performance of reciprocating compressors with provision of cooling cylinder is compared with

Question 9

A reversible engine operates between temperatures 900 k and T₂(T₂ < 900K) and another reversible engine between T₂ and 400 K (T₂>400 K) in series. The value of T₂ if work outputs of both the engines are equal is

Question 10

Which one of the following is correct on the basic of the second law of the thermodynamics?

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ESE & GATE ME Thermodynamics

Oct 21ESE & GATE ME