ISRO Scientist or Engineer Refrigeration & Air-Conditioning 2018

A heat engine is supplied with 250 $$\frac{KJ}{s}$$ of heat at a constant fixed temperature of $$227^\circ$$C. The heat is rejected at $$27^\circ$$C. If the cycle is reversible, the amount of heat rejected is :

A heat Engine gives an output of 3 kW when the input is 10000 $$\frac{joules}{sec}$$. The thermal efficiency of the engine is

A base load power station of capacity 35 MW has annual output of $$150 \times 10^{6}$$ kWh. The plant capacity factor of the power plant is

Diesel engine having brake thermal efficiency of 30% and the calorific value of fuel used is 10000 $$\frac{kcal}{kg}$$, the brake specific fuel consumption will be

The control rods in the control system of nuclear reactors are used to

Efficiency of Carnot engine is 80%. If the cycle direction is reversed, what will be the value of COP of reversed Carnot cycle

If the evaporator temperature of a refrigeration plant is lowered, keeping condensing temperature constant, the horse power requirement of compressor will

For Ammonia refrigeration system, the pipe for carrying refrigerant shall be made of following material:

In psychrometric chart, relative humidity lines are:

The operating temperature of a cold storage is $$-9^\circ$$C and load for the refrigeration plant is 20 kW for ambient temperature of $$24^\circ$$C. The actual COP of the plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is: