Question:

What is the critical pressure ratio for initially wet steam?

A.

0.582

B.

0.546

C.

0.577

D.

0.601

Answer» a. 0.582

Question:

Which of the following is not an example of recuperators type heat exchanger?

A.

automobile radiators

B.

condensers

C.

chemical factories

D.

oil heaters for an aero plane

Answer» c. chemical factories

Question:

In absorption refrigeration cycle, which of the following is used?

A.

refrigerant

B.

absorbent

C.

both of the mentioned

D.

none of the mentioned

Answer» c. both of the mentioned

Question:

Multi stage arrangement of turbines is called as                      

A.

impulse turbine

B.

reaction turbine

C.

compounding

D.

none of the mentioned

Answer» c. compounding

Question:

Which among the following fuels need excess amount of air for complete combustion?

A.

natural fuels

B.

liquid fuels

C.

gaseous fuels

D.

artificial solid fuels

Answer» d. artificial solid fuels

Question:

Which of the following is not a component of packaged air conditioners?

A.

compressor

B.

condenser

C.

chiller

D.

evaporator

Answer» c. chiller

Question:

Which fuel is slightly heavier than kerosene and is produced in petroleum fractions?

A.

diesel

B.

crude oil

C.

gasoline

D.

distillate

Answer» d. distillate

Question:

Which is the artificial liquid fuel obtained by fermentation process?

A.

fuel oil

B.

alcohol

C.

distillate

D.

kerosene

Answer» b. alcohol

Question:

When mach number is greater than one the flow is                  

A.

subsonic

B.

supersonic

C.

laminar

D.

none of the mentioned

Answer» b. supersonic

Question:

Which fuel is prepared by heating bituminous coal continuously for 15 to 18 hours in closed chamber?

A.

charcoal

B.

anthracite

C.

coke

D.

briquette coal

Answer» c. coke