O O 108/2017

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In vapour compression cycle, the condition of refrigerant is high pressure saturated
liquid

A} Before entering the expansion valve

B) Before passing through the condenser

C) Before entering the compressor

D) After passing through the condenser

Delta iron occurs at a temperature of
A} Between 910°C and 1400°C

B) Between 1400°C and 1539°C

C) Above the melting point

D) None of the above

Super conduction by metals is observed in the temperature range of

A} Above 1000°C B) Above 100°K

© Above 100°C D) Below 100K

Which of the following constituents of steel is softest and least strong ?
A) Austenite B) Ferrite

C) Pearlite D) Bainite

Ammonia — absorption refrigeration cycle requires

A} Very little work input

B) Zero work input

C) Maximum work input

D) Nearly same work input as for vapour compression cycle

The main object of scientific layout is
A) To minimize production delays

B) To produce better quality products
C) To utilize maximum floor area

D) All of the above

The diagram which shows the correct crank positions corresponding to the opening
and closing of the valves, is known as

A} P-V diagram B) Valve timing diagram
© 1೧010810 diagram D) Axial force diagram