White metal is an alloy of

Question: Air refrigeration cycle is used in the air crafts, because of
[A].

low temperature encountered at high altitude.

[B].

its high heat transfer rate.

[C].

its low unit weight per ton of refrigeration.

[D].

its higher co-efficient of performance (COP).

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ furnace is generally used in the non-ferrous foundaries.
[A].

Direct arc

[B].

Indirect arc

[C].

Resistance

[D].

Induction

Answer: Option B

Explanation:

No answer description available for this question.