The most detrimental impurity in high pressure boiler feed water is ___________________?

Question: A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?
[A].

Steel

[B].

Glass

[C].

Rubber

[D].

Brass

Answer: Option A

Explanation:

No answer description available for this question.

Question: Air standard Otto cycle is more efficient than the diesel cycle for the same
[A].

heat addition & compression ratio.

[B].

heat addition & pressure.

[C].

compression ratio & pressure.

[D].

cylinder dimension & rpm.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cascade control is
[A].

the continuous adjustment of the set point index of an automatic control loop by a primary (master) controller.

[B].

used when changes in process conditions cause serious upsets in the controlled variable.

[C].

useful to control flow from temperature.

[D].

all ‘a’, ‘b’ & ‘c’.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Copper is not present as an alloying constituent in
[A].

silicon bronze

[B].

constantan

[C].

nichrome

[D].

delta metal

Answer: Option C

Explanation:

No answer description available for this question.

Question: Number of electrons in the outermost orbit of a semi-conductor is
[A].

2

[B].

4

[C].

6

[D].

8

Answer: Option B

Explanation:

No answer description available for this question.