Test: Strength of Materials - 3


25 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Test: Strength of Materials - 3


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QUESTION: 1

the enthalpy reading of a refrigerator are
i. at inlet to compressor → 2000 kJ/kg.
ii. at exit of compressor → 2500 kJ/kg.
iii. at exit of condenser → 500 kJ/kg.
The COP of the refrigerator is .

Solution:
QUESTION: 2

A VCRS has a COP of 5. If it requires a workinput of -2kw then the heat rejected by it toenvironment is .

Solution:
QUESTION: 3

The mass flow rate in a refrigeration plant is 2kg/s and its refrigeration effect in 10 kJ/kg. TheRefrigeration capacity of the plant is.

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QUESTION: 4

The enthalpy in a VCRS at exit of condenser is500 kJ. The refrigeration effect is 1000 kJ. Theenthalpy at the start of compression is

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QUESTION: 5

In expansion value of a refrigerator the followingproperty remains constant.

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QUESTION: 6

The type of value used reciprocating refrigerantcompressors is.

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QUESTION: 7

Which of the following is an Ideal Refrigerationcycle.

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QUESTION: 8

It the same engine is used as Refrigerator andHeat pump their COPs are relate as:-

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QUESTION: 9

1 ton of refrigeration is equal to

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QUESTION: 10

Ice is to be produced using a refrigerator in summer and than in winter. than

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QUESTION: 11

for a refrigeration cycle the critical point shouldbe

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QUESTION: 12

At saturated vapour line the value of dryness fraction is

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QUESTION: 13

In VCRS heat is rejected at

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QUESTION: 14

Which of the following is disadvantage of wetcompression

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QUESTION: 15

COP of a cascade Refrigeration system is given as.

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QUESTION: 16

Which of the following are be used as secondaryrefrigerant.

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QUESTION: 17

Which of the following group of refrigerant hasozone depletion capability.

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QUESTION: 18

Which of the following has undesirable critical temperature for indian summer.

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QUESTION: 19

Which of the following should be property of arefrigerant.

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QUESTION: 20

For the measurement of quality, the state of the substance is brought from the two-phase region to

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QUESTION: 21

Sling Psychrometer is used to measure

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QUESTION: 22

for saturated air, wet bulb depression is

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QUESTION: 23

During sensible heating specific humidity

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QUESTION: 24

A Brayton cycle is working under a pressure ratio of 4. it in then reversed to use as an refrigeration
cycle. its cop is

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QUESTION: 25

In psychrometric chart which of the following properties is fixed

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