Question:

In velocity compounded turbines flow passage is from                          

A.

moving blades to fixed nozzles

B.

fixed nozzles to moving blades

C.

fixed blades to moving nozzles

D.

none of the mentioned

Answer» d. none of the mentioned

Question:

Which of the following operations occur in a vapour refrigeration cycle?

A.

compression

B.

cooling and condensing

C.

expansion and evaporation

D.

all of the mentioned

Answer» d. all of the mentioned

Question:

Coefficient of discharge is _____________

A.

directly proportional to coefficient of discharge

B.

inversely proportional to square of the coefficient of discharge

C.

inversely proportional to coefficient of discharge

D.

directly proportional to square of coefficient of discharge

Answer» b. inversely proportional to square of the coefficient of discharge

Question:

Nozzle is used to control direction or characteristics of flow.

A.

true

B.

false

Answer» a. true

Question:

When moving along a curved path, he

A.

leans inwards

B.

leans outwards

C.

is still

D.

leans sideways

Answer» a. leans inwards

Question:

Pass-out turbines are used in which of these cases?

A.

relatively high back pressure

B.

small heating requirement

C.

only relatively low back pressure

D.

both relatively high back pressure and small heating requirement

Answer» d. both relatively high back pressure and small heating requirement

Question:

Which fuel is produced by powdering low grade coal with high ash content?

A.

coke

B.

pulverized coal

C.

charcoal

D.

briquette coal

Answer» b. pulverized coal

Question:

Isentropic nozzle flow states about the movement of a gas or fluid through a narrow orifice without an increase or decrease in

A.

accelerating

B.

decelerating

C.

equilibrium

D.

exponential increase

Answer» b. decelerating

Question:

What is the advantage of having smaller ratio of water to steam space?

A.

steam can be generated at a faster even if the boiler is cold

B.

increases the rate of evaporation

C.

water is made cyclic, i.e., from boiler drum to water tube and back to drum

D.

helps in mobilizing the boiler

Answer» a. steam can be generated at a faster even if the boiler is cold

Question:

A velocity compounded impulse turbine is also called as                      

A.

curtis wheel

B.

pressure compounded

C.

curtis wheel & pressure compounded

D.

none of the mentioned

Answer» a. curtis wheel