Which one of the following statements regarding ac circuits is correct?

Why are digital circuits easier to design than analog circuits?

A

they do not control electricity precisely over a wide range

B

they are made in the form of ICs

C

all elements of digital circuit are from the same family

D

they are smaller in size

E

None of the above

Of the following circuits, the one which involves storage is

A

RS Latch

B

Mux

C

Nand

D

Decoder

One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.

A

True

B

False

Some circuits require more than one voltage or current source.

A

True

B

False

Which of the following problem arises in D.C. motors which are fed from thyristor bridge circuits ?

A

Increased I R losses

B

Increased core losses

C

Poor commutation

D

Change in motor parameters

E

All of the above

Indicate which of the following circuits could not demodulate SSB:

A

Balance modulator

B

Product modulator

C

BFO

D

Phase discriminator

In which of the following adder circuits, the carry look ripple delay is eliminated?

A

Half adder

B

Full adder

C

Parallel adder

D

Carry-look-ahead adder

E

None of the above

Which of the following capacitors preferred for high frequency circuits ?

A

Air capacitor

B

Electrolytic capacitor

C

Mica capacitor

D

none of the above

Which of the following are the building blocks of all the circuits in a computer.

A

Circuit switch

B

Logic gates

C

Logical Operators

D

Instructions

E

None of the above

Which of the following meters are not used on D.C. circuits

A

Mercury motor meters

B

Commutator motor meters

C

Induction meters

D

None of the above

Which one of the following statements regarding ac circuits is correct?

Related Questions