Hydraulic Machines | Mechanical Engineering

Delivery head of a centrifugal pump is

Byadmin September 14, 2022

Question: Delivery head of a centrifugal pump is
[A].

directly proportional to N

[B].

inversely proportional to N

[C].

directly proportional to N2

[D].

inversely proportional to N2

Answer: Option C

Explanation:

No answer description available for this question.

Industrial Engineering And Production Management | Mechanical Engineering

PERT is an event oriented technique.

Question: PERT is an event oriented technique.
[A].

Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Read More PERT is an event oriented technique.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Question: A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
[A].

automatic expansion valve
[B].
high side float valve
[C].
thermostatic expansion valve
[D].
low side float valve

Answer: Option D

Explanation:

No answer description available for this question.

Read More A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
Hydraulic Machines

In a centrifugal pump casing, the flow of water leaving the_______________?

In a centrifugal pump casing, the flow of water leaving the_______________?

A. radial
B. radial
C. centrifugal
D. rectilinear
E. vortex

Read More In a centrifugal pump casing, the flow of water leaving the_______________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

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
[B].
1.25
[C].
2.15
[D].
5.12

Answer: Option B

Explanation:

No answer description available for this question.

Read More 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
Hydraulic Machines

According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?

According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?

A. directly as fan speed
B. square of fan speed
C. cube of fan speed
D. square root of fan speed
E. none of the above

Read More According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?
Machine Design | Mechanical Engineering

For hardening alloy steels and high speed steels, they are heated to

Question: For hardening alloy steels and high speed steels, they are heated to
[A].

500 to 600°C
[B].
700 to 900°C
[C].
1100 to 1300°C
[D].
1300 to 1500°C

Answer: Option C

Explanation:

No answer description available for this question.

Read More For hardening alloy steels and high speed steels, they are heated to

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