D:-Engine speed

Correct Answer:- Option-D
Question29:-Which is not a part of magneto-ignition system?

A:-Condenser

B:-Battery

C:-Circuit breaker

D:-Induction coil

Correct Answer:- Option-B
Question30:-Superheating in a refrigeration cycle

A:-Decreases COP

B:-Increases COP

C:-COP remains unchanged

D:-Unpredictable

Correct Answer:- Option-D
Question31:-Change of resistance with intensity of light takes place in

A:-Photo-voltaic cell

B:-Photo-emissive cell

C:-Photo-conductive cell

D:-None of these

Correct Answer:- Option-C
Question32:-The diameter of a round bar with close tolerance is quickly measured by

A:-External micro meter

B:-Slip gauge
:-Vernier caliper

D:-Snap gauge

Correct Answer:- Option-D
Question33:-In Electrolux refrigerator

A:-Ammonia evaporates in hydrogen
B:-Hydrogen evaporates in ammonia
:-Hydrogen is absorbed in ammonia

D:-Hydrogen is absorbed in water

Correct Answer:- Option-A
Question34:-Free convection heat flow depends on all of the following except
A:-Coefficient of viscosity
Velocity

C:-Density

D:-Gravitational force

Correct Answer:- Option-B
Question35:-Major constituents of satellite are
A:-Nickel, copper and zinc
-Zinc, lead and tin

C:-Cobalt, vanadium and nickel

D:-Cobalt, chromium and tungsten

Correct Answer:- Option-D
Question36:-Typewriter constitutes

A:-Structure

B:-Machine

C:-Inversion

D:-Mechanism

Correct Answer:- Option-D
Question37:-The equation PV=mRT is essentially valid for

A:-Perfect gas

C:-Monoatomic gas
D:-Mixture of gases
Correct Answer:- Option-A
Question38:-Cavitation in centrifugal pumps can be reduced by
A:-Throttling the discharge
B:-Increasing the flow velocity