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For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary

August 13, 2022 by admin

Question: For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary
[A].

directly as square of gas density.

[B].

directly as gas density.

[C].

directly as square root of gas density.

[D].

inversely as gas density.

Answer: Option B

Explanation:

No answer description available for this question.

In case of centrifugal fan or blower, the gas capacity varies as

August 13, 2022 by admin

Question: In case of centrifugal fan or blower, the gas capacity varies as
[A].

speed

[B].

(speed)2

[C].

(speed)3

[D].

(speed)0.5

Answer: Option A

Explanation:

No answer description available for this question.

By ‘functional relationship’ is meant

August 13, 2022 by admin

Question: By ‘functional relationship’ is meant
[A].

a short-term relationship

[B].

practical and utilitarian relationship

[C].

temporary arrangement

[D].

close and unbreakable relationship

Answer: Option B

Explanation:

No answer description available for this question.

One dimensional flow implies

August 13, 2022 by admin

Question: One dimensional flow implies
[A].

flow in a straight line.

[B].

steady uniform flow.

[C].

unsteady uniform flow.

[D].

a flow which does not account for changes in transverse direction.

Answer: Option D

Explanation:

No answer description available for this question.

With increase in pump speed, its NPSH requirement

August 13, 2022 by admin

Question: With increase in pump speed, its NPSH requirement
[A].

decreases

[B].

increases

[C].

remains unaltered

[D].

can either increase or decrease ; depends on other factors

Answer: Option B

Explanation:

No answer description available for this question.

Head developed by a centrifugal pump depends on its

August 13, 2022 by admin

Question: Head developed by a centrifugal pump depends on its
[A].

speed

[B].

impeller diameter

[C].

both (a) and (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Function of air vessel provided in a reciprocating pump is to

August 13, 2022 by admin

Question: Function of air vessel provided in a reciprocating pump is to
[A].

reduce discharge fluctuation.

[B].

reduce the danger of cavitation.

[C].

avoid the necessity of priming.

[D].

increase the pump efficiency.

Answer: Option A

Explanation:

No answer description available for this question.

ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?

August 13, 2022 by admin

Question: ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?
[A].

IBU

[B].

[C].

UTI

[D].

BUT

Answer: Option C

Explanation:

In the first step, one letter from the beginning and one from the end of a term are removed to give the next term. In the second step, two letters from the beginning of a term are removed.

These two steps are repeated alternately.

A piezometer provided in the pipe measures

August 13, 2022 by admin

Question: A piezometer provided in the pipe measures
[A].

friction factor

[B].

static pressure

[C].

dynamic pressure

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Co-efficient of velocity is __________ the coefficient of discharge.

August 13, 2022 by admin

Question: Co-efficient of velocity is __________ the coefficient of discharge.
[A].

less than

[B].

more than

[C].

equal to

[D].

not related to

Answer: Option B

Explanation:

No answer description available for this question.