In which of the following applications D.C. series motor is invariably tried?

Belted slip ring induction motor is almost invariably used for

A

Water pumps

B

Jaw crushers

C

Centrifugal blowers

D

None of the above

For which of the following applications a D.C. motor is preferred over an A.C. motor?

A

Low speed operation

B

High speed operation

C

Variable speed operation

D

Fixed speed operation

A.C. series motor as compared to D.C. series motor has

A

smaller brush width

B

less number of field turns

C

more number of armature turns

D

less air gap

E

all of the above

Surrounded by a retinue of sycophants who invariably ---- her singing, she wearied of the constant adulation and longed for honest criticism.

A

orchestrated

B

extolled

C

assailed

D

reciprocated

"Invariably" could be best replaced by--

A

regular

B

alterable

C

inconsistent

D

always

_______ is invariably used as base load plant.

A

Diesel engine plant

B

Nuclear power plant

C

Gas turbine plant

D

Pumped storage plant

In AC. circuits, laminated iron is invariably used in order to

A

Reduce eddy current loss

B

Increase heat radiation

C

Make assembly cheap and easier

D

Reduce circuit permeability

Large capacity generators are invariably

A

water cooled

B

natural air cooled

C

forced air cooled

D

hydrogen cooled

A nuclear power plant is invariably used as a

A

peak load plant

B

base load plant

C

stand-by plant

D

spinning reserve plant

E

any of the above

The bronze coins of Natraja or Dancing Shiva during the Chola period invariably depicted the deity with __________ arms

A

Eight

B

Six

C

Four

D

Two

In which of the following applications D.C. series motor is invariably tried?

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