The boiling point of ammonia is___________________?
The boiling point of ammonia is___________________?
A. -100°C
B. -50°C
C. – 33.3°C
D. 0°C
E. 33.3°C
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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.
A perfect black body is one which
Question: A perfect black body is one which
[A].is black in colour [B].
absorbs heat radiations of all wave lengths falling on it [C].
reflects all the heat radiations [D].
transmits the heat radiations Answer: Option B
Explanation:
No answer description available for this question.
The by-pass factor (B. P. F.) in case of sensible heating of air is (Where td1 = Dry bulb temperature of air entering the heating coil, td2 = Dry bulb temperature of air leaving the heating coil, and td3 = Dry bulb temperature of heating coil)
Question: The by-pass factor (B. P. F.) in case of sensible heating of air is (Where td1 = Dry bulb temperature of air entering the heating coil, td2 = Dry bulb temperature of air leaving the heating coil, and td3 = Dry bulb temperature of heating coil)
[A].[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
During sensible cooling of air, the relative humidity increases.
Question: During sensible cooling of air, the relative humidity increases.
[A].Yes [B].
No Answer: Option A
Explanation:
No answer description available for this question.
If a gas is to be liquified, its temperature must be
Question: If a gas is to be liquified, its temperature must be
[A].increased to a value above its critical temperature [B].
reduced to a value below its critical temperature [C].
equal to critical temperature [D].
none of the above Answer: Option C
Explanation:
No answer description available for this question.
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with cp = 1 kJ/kg)
Question: A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with cp = 1 kJ/kg)
[A].25 kJ/kg [B].
50 kJ/kg [C].
l00 kJ/kg [D].
125 kJ/kg Answer: Option B
Explanation:
No answer description available for this question.