Question:

When steam reaches turbine blades the type of force responsible for moving turbine blades are                            

A.

axial force

B.

shear force

C.

longitudinal force

D.

none of the mentioned

Answer» a. axial force

Question:

A train has to negotiate a curve of radius 400m. By how much should the putter rail be raised with respect to inner rail for speed of 48 km/h? The distance between the rails is 1m.

A.

0.20m

B.

0.0454m c) 0.45m

C.

d) 0.020m

Answer» b. 0.0454m c) 0.45m

Question:

In absorption system, compressor in vapour compression cycle is replaced by absorber- generator assembly.

A.

true

B.

false

Answer» a. true

Question:

Which fuel is heavier than petrol but less volatile and it is commonly used as domestic fuel?

A.

diesel

B.

distilled fuel

C.

kerosene

D.

alcohol

Answer» c. kerosene

Question:

Which type of boilers use orifice to control the flow circulation?

A.

natural circulation boilers

B.

forced convection boilers

C.

once-through boilers

D.

positive forced circulation boilers

Answer» b. forced convection boilers

Question:

The energy transfer between the hot fluid and cold fluids is brought about by their complete physical mixing in

A.

direct contact heat exchanger

B.

regenerators

C.

recuperators

D.

boilers

Answer» a. direct contact heat exchanger