The boiling point of R-12 is about – 30°C.
Question: The boiling point of R-12 is about – 30°C.
[A].
True
False
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
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Nodular cast iron is produced by adding __________ to the molten cast iron.
Question: Nodular cast iron is produced by adding __________ to the molten cast iron.
[A].nickel [B].
chromium [C].
copper [D].
magnesium Answer: Option D
Explanation:
No answer description available for this question.
A steam pipe is to be insulated by two insulating materials put over each other . For best results__________________?
A steam pipe is to be insulated by two insulating materials put over each other . For best results__________________?A. better insulation should be put over pipe and better one over it
B. inferior insulation should be put over pipe and better one over it
C. both may be put in any order
D. whether to put inferior OIL over pipe or the better one would depend on steam temperature
E. unpredictableThe casting ability of aluminium increases when __________ is added to aluminium.
Question: The casting ability of aluminium increases when __________ is added to aluminium.
[A].copper [B].
magnesium [C].
silicon [D].
lead and bismuth Answer: Option C
Explanation:
No answer description available for this question.
The COP of a domestic refrigerator___________________?
The COP of a domestic refrigerator___________________?A. is less than 1
B. is more than 1
C. is equal to 1
D. depends upon the make
E. depends upon the weather conditionsIn case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient
Question: In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient
[A].increases [B].
decreases [C].
is not affected [D].
may increase or decrease; depends on the feed Answer: Option B
Explanation:
No answer description available for this question.
An alloy of copper, tin and zinc is known as
Question: An alloy of copper, tin and zinc is known as
[A].brass [B].
bronze [C].
gun metal [D].
muntz metal Answer: Option C
Explanation:
No answer description available for this question.