Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part3 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.Freon group of refrigerants are

inflammable

toxic

non-inflammable and toxic

non-toxic and inflammable

non-toxic and non-inflammable.

12.The leaks in a refrigeration system using Freon are detected by

halide torch which on detection produces greenish flame lighting

sulphur sticks which on detection gives white smoke

using reagents

smelling

sensing reduction in pressure.

13.Super heating in a refrigeration cycle

increases COP

decreases COP

COP remains unaltered

other factors decide COP

unpredictable.

14.Short horizontal lines on pressure-enthalpy chart show

constant pressure lines

constant temperature lines

constant total heat lines

constant entropy lines

constant volume lines.

15.Efficiency of a Cornot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle

1.25

0.8

0.5

0.25

none of the above.

More Refrigeration And Air Condition QUESTIONS AND ANSWERS available in next pages

Health is the greatest gift, contentment is the greatest wealth -Buddha

Identify your problems but give your power and energy to solutions- Tony Robbins

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Mechanical Engineering Questions And Answers :: Refrigeration And Air Condition: part3

Refrigeration And Air Condition QUESTIONS AND ANSWERS

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