The efficiency of an electrolytic rectifier is nearly

Diaphragm electrolytic cell as compared to mercury electrolytic cell

A

Produces 70% NaOH solution

B

Requires less specific power consumption for the production of chlorine

C

Requires lesser investment for similar capacity

D

All of the above

Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

A

Has larger production capacity per unit cell

B

Consumes less power per ton of Cl₂ produced

C

Produces high purity (70%) caustic soda directly

D

All of the above

For the same secondary voltage, the output voltage from a centre-tap rectifier is ___________ than that of bridge rectifier

A

twice

B

thrice

C

four time

D

one-half

The PIV rating of each diode in a bridge rectifier is ___________ that of the equivalent centre-tap rectifier

A

one-half

B

the same as

C

twice

D

four times

Taciturn is most nearly opposite in meaning to -. (Choose the word which is most nearly opposite in meaning to word in capital letters)

A

Spoken

B

Talkative

C

Leisurely

D

Placatory

Castigate is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)

A

Flatten

B

Change

C

Extol

D

None of them

Salute is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)

A

Espy

B

Defame

C

Acquire

D

Cogitate

Indictment is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)

A

Eulogy

B

Tirade

C

Crime

D

None of them

Fastidious is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)

A

Monotonous

B

Aloof

C

Easygoing

D

Interminable

The efficiency of the copper oxide rectifier seldom exceeds

A

90 to 95%

B

85 to 90%

C

80 to 85%

D

65 to 75%

The efficiency of an electrolytic rectifier is nearly

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