951. Specify the sequence correctly
A. Grain growth, recrystallisation, stress relief
B. Stress relief, grain growth, recrystallisation
C. Stress relief, recrystallisation, grain growth
D. Grain growth, stress relief, recrystallization

952. Thermoplastic materials are those materials which
A. are formed into shape under heat and pressure and results in a permanently hard product
B. do not become hard with the application of heat and pressure and no chemical change occurs
C. are flexible and can withstand considerable wear under suitable conditions
D. are used as a friction lining for clutches and brakes

953. Which of the following material has maximum ductility?
A. Mild steel
B. Copper
C. Nickel
D. Aluminium

954. An eutectoid steel consists of
A. wholly pearlite
B. wholly austenite
C. pearlite and ferrite
D. pearlite and cementite

955. Shock resisting steels should have
A. low wear resistance
B. low hardness
C. low tensile strength
D. toughness

956. A single acting steam engine produces __________ power than that of double acting steam engine.
A. equal
B. half
C. double
D. four times

957. The pressure of steam in the engine cylinder at the beginning of the stroke is __________ the boiler pressure.
A. equal to
B. less than
C. higher than

958. The function of a flywheel is
A. to convert reciprocating motion of the piston into rotary motion.
B. to convert rotary motion of the crankshaft into to and fro motion of the valve rod
C. to prevent fluctuation of speed
D. to keep the engine speed uniform at all load conditions

959. The rate of steam produced in Benson boiler is
A. 100 tonnes/h
B. 135 tonnes/h
C. 175 tonnes/h
D. 250 tonnes/h

960. Cast iron is a
A. ductile material
B. malleable material
C. brittle material
D. tough material

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