SSC JE Mechanical Engineering 27th Jan 2018 Shift-1
For the following questions answer them individually
The work and heat transfer per degree of temperature change for a closed system is given by $$\frac{dW}{dT} = \frac{1}{20} kJ/^\circ C ; \frac{dW}{dT} = \frac{1}{10} kJ/^\circ C$$; what is the change in internal temperature (in KJ ) as the temperature increases from $$160^\circ to 350^\circ$$ C ?
An inventor states that the new engine he invented rejects 30% of the heat it absorbs from the reservoir, while the temperature of the source and the sink are maintained at 500 K and 200 K respectively. His engine is equivalent to ________.
While working as an heat engine, the efficiency is 40%. If the cycle is reversed and made into a heat pump. What is the coefficient of performance of the heat pump?
which of the following represents correct graph for relation between $$(\eta)$$ and the compression ration $$r_{k}$$ ?
In an air standard Diesel cycle, p is the fuel-cut off ratio and y is the adiabatic index and r is the compression ratio. What is the air standard efficiency of the cycle?
