Air refrigerator works on

A Reversed Carnot cycle
B Bell Coleman cycle
C Both (A) and (B)
D None of these

Correct Answer: Both (A) and (B)

Air cycle refrigeration works on Reversed Carnot cycle and Bell Coleman cycle.
Air is compressed and then heat removed, this air is then expanded to a lower temperature than before it was compressed.
Work is taken out of the air by an expansion turbine, which removes energy as the blades are driven round by the expanding air.
Bissoy MCQ
#Mechanical Engineering #Refrigeration and Air Conditioning

Related Questions

Q.(1-4): Answer the questions on the basis of the information given below. * F,G and H are insurance companies , Q,R,S and T are private detectives .Each detective works for at least one of the insurance companies. * Q always works for F and at least one of the other companies. Some of the time G employs only one of these detectives,' the rest of the time it employs exactly two of them. *F and H each employ exactly two of these detectives all the time. If R works for H only, and if S works for G and H only, T works for--
A F only
B G only
C H only
D both F and G
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
One fourth the price of a TV is equal to 1/6th the price of a refrigerator. If the total cost of the TV and the refrigerator is Tk 60000, what is the price of the TV?
A Tk 22000
B Tk 24000
C Tk 27500
D None of these
An air conditioner works in the same way ------a refrigerator.
A by
B as
C as if
D to be
Whenever G employs only one detective, which of the following must be true? 1.R works for two insurance companies. 2. T works for G, 3. S works for two insurance companies
A 1 only
B 2 only
C 3 only
D 1 and 2 only
A refrigerator works on the principle of __________ law of thermodynamics.
A Zeroth
B First
C Second
D Third
Domestic refrigerator usually works on the __________ refrigeration cycle.
A Carnot
B Air
C Absorption
D Vapour-ejection
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
A Same
B Less
C More
D None of these
The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is
A Less
B More
C Same
D Dependent on climatic conditions
If a women is paid Tk. m per hour for every hour she works up to 8 hours and is paid double for every hour she works after 8 hours, how many Tk. will she be paid for working 13 hours?
A 13 m
B 18 m
C 6
D 8

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