Question 1

A nozzle used to send fluid in coherent stream is called as______________

Accepted Answer

A)  jet
B)  high velocity nozzle
C)  every nozzle sends fluid in coherent stream
D)  none of the mentionedE) All of the above
F) C) and D)

Question 2

The COP of absorption refrigeration system is

Accepted Answer

A)  low
B)  high
C)  equal to that of vapour compression refrigeration system
D)  none of the mentionedE) A) and B)
F) A) and C)

Question 3

What is the relation between heat rejection ratio (HRR)  and Coefficient of performance (COP) ?

Accepted Answer

A)  hrr = 1 + 1/cop
B)  hrr = 1+ cop
C)  hrr = cop/2
D)  hrr = 1/copE) B) and C)
F) A) and D)

Question 4

The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop______________

Accepted Answer

A)  increases
B)  decreases
C)  is unpredictable
D)  remains sameE) All of the above
F) C) and D)

Question 5

If there is a decrease in viscosity, the heat transfer coefficient ____________

Accepted Answer

A)  increase
B)  decrease
C)  remains same
D)  becomes zeroE) A) and B)
F) All of the above

Exam 14: Condensers and Heat Transfer in Refrigeration and Air Conditioning Systems

What is the relation between heat rejection ratio (HRR) and Coefficient of performance (COP) ?