Question: The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.
[A].increases
decreases
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Mechanical Engineering
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
Question: For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
[A].copper
aluminium
steel
brass
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
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
False
[A].
[B].
Answer: Option B
Explanation:
No answer description available for this question.
A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
Question: A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
[A].higher
lower
[A].
[B].
Answer: Option B
Explanation:
No answer description available for this question.
Most air cooled condensers are designed to operate with a temperature difference of
Question: Most air cooled condensers are designed to operate with a temperature difference of
[A].5°C
8°C
14°C
22°C
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about
Question: In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about
[A].1
1.25
2.15
5.12
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
A condenser is used in the __________ pressure side of a refrigerating system.
Question: A condenser is used in the __________ pressure side of a refrigerating system.
[A].low
high
[A].
[B].
Answer: Option B
Explanation:
No answer description available for this question.
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be
Question: A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be
[A].lack of cooling water
water temperature being high
dirty condenser surface
all of these
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
Question: For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
[A].reciprocating
rotating
centrifugal
screw
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A refrigerant compressor is used to
Question: A refrigerant compressor is used to
[A].raise the pressure of the refrigerant
raise the temperature of the refrigerant
circulate the refrigerant through the refrigerating system
all of the above
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.