8.

9.

10.

11.

12.

A small power plant of SOOkW capacity is supplied with a steam at 30bar and
300 °C, the condenser pressure is 0.04bar.
a. Determine the Rankine efficiency and steam generation rate of boiler
in kg/s.
b. Ifa feed water of mixing type is used at 7bar pressure, then find the

efficiency of the cycle and steam generation rate.

A gas-turbine power plant operates on simple Brayton cycle with air as the
working fluid and delivers 32MW of power. The minimum and maximum
temperatures in the cycle are 310K and 900K, and the pressure of air at
compressor exit is 8 times the value at the compressor inlet. Assuming an

isentropic efficiency of 80% for compressor and 86% at for turbine, determine

(a) Exit temperature of turbine.
(b) Mass flow rate of air through the cycle.
OR

Consider an ideal air-standard Brayton cycle in which the air into the
compressor is at 100 kPa, 20°C, and the pressure ratio across the compressor
is 12:1. The maximum temperature in the cycle is 1100°C, and the air flow
rate is 10 kg/s. Assume constant specific heat for the air. Determine the
compressor work, the turbine work, and the thermal efficiency of the cycle.
Assume the compressor isentropic efficiency as 85% and the turbine isentropic

efficiency as 88%.

(a) With an example, explain the binding energy 8 nucleus. (3 Marks)
(b) Draw the cross sectional view of a CANDU fuel element assembly and
Explain each part. (7 Marks)
OR
Explain working of liquid metal fast breeder nuclear reactor with a neat figure.

(4 x 10 marks =40 marks)