The efficiency of the open cycle gas plant is quite low. Why?

Gas gets cooled before reaching the turbine wheels

A lot of mechanical energy is used up by the compressor

Due to the presence of regenerator and absence of air pre heater

Both Gas gets cooled before reaching the turbine wheels and a lot of mechanical energy is used up by the compressor

Explore topic-wise MCQs in Power Plant.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.

1.	The efficiency of the open cycle gas plant is quite low. Why?
A.	Gas gets cooled before reaching the turbine wheels
B.	A lot of mechanical energy is used up by the compressor
C.	Due to the presence of regenerator and absence of air pre heater
D.	Both Gas gets cooled before reaching the turbine wheels and a lot of mechanical energy is used up by the compressor
Answer» E.

Discussion

2.	If p and q are the efficiencies of a Brayton & Rankine cycles respectively in a Brayton-Rankine combined plant, the efficiency n of a combined plant is?
A.	n = p/q
B.	n = p+q-pq
C.	n = pq
D.	n = (1 – pq)
Answer» C. n = pq

Discussion

Explore topic-wise MCQs in Power Plant.

The efficiency of the open cycle gas plant is quite low. Why?

If p and q are the efficiencies of a Brayton & Rankine cycles respectively in a Brayton-Rankine combined plant, the efficiency n of a combined plant is?