Which of the following refrigerant has the highest freezing point.

Byadmin September 14, 2022

Question: Which of the following refrigerant has the highest freezing point.
[A].

Ammonia

[B].

Carbon dioxide

[C].

Sulphur dioxide

[D].

R-12

Answer: Option B

Explanation:

No answer description available for this question.

Compressors | Gas Dynamics and Gas Turbines | Mechanical Engineering

If p1 is the pressure of air entering the L.P, cylinder and p3 is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by

Question: If p1 is the pressure of air entering the L.P, cylinder and p3 is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by
[A].

D1/D2 = (p1p3)1/2
[B].
D1/D2 = (p1/p3)1/4
[C].
D1/D2 = (p1p3)1/4
[D].
D1/D2 = (p3/p1)1/4

Answer: Option D

Explanation:

No answer description available for this question.

Read More If p1 is the pressure of air entering the L.P, cylinder and p3 is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.

Question: In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.
[A].

True
[B].
False

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.
Automobile Engineering | Mechanical Engineering

In radial tyres

Question: In radial tyres
[A].

one ply layer runs diagonally one way and another layer runs diagonally the other way
[B].
all plies run parallel to one another and vertical to tyre bead
[C].
inner tubes are always used
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More In radial tyres
Refrigeration and Air Conditioning

A standard ice point temperature corresponds to the temperature of ___________________?

A standard ice point temperature corresponds to the temperature of ___________________?

A. water at 0°C
B. ice at – 4°C
C. solid and dry ice
D. mixture of ice, water and vapour under equilibrium conditions under NTP conditions
E. mixture of ice and water Under equilibrium conditions

Read More A standard ice point temperature corresponds to the temperature of ___________________?
Automobile Engineering | Mechanical Engineering

In a square type engine

Question: In a square type engine
[A].

geometrical shape is square
[B].
diameter and length of piston are same
[C].
two cylinders are placed horizontal and two vertical
[D].
stroke length and cylinder bore are same

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a square type engine
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

If the condenser temperature is kept constant, the coefficient of performance of a refrigeration cycle increases with the increase in evaporator temperature.

Question: If the condenser temperature is kept constant, the coefficient of performance of a refrigeration cycle increases with the increase in evaporator temperature.
[A].

Yes
[B].
No

Answer: Option A

Explanation:

No answer description available for this question.

Read More If the condenser temperature is kept constant, the coefficient of performance of a refrigeration cycle increases with the increase in evaporator temperature.

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