31.

32.

33.

34.

35.

36.

37.

38.

058/23

The CMRR of an operational amplifier should be
A) As small as possible B) Close to zero
C) As large as possible D) Close to unity

A material with resistivity of p Q-m has a length of 1 meter and area of cross section
of 1m2. Its Resistance is

A) pQ B) R=12
C) R=1/pQ 0) 20൨

If the length and radius of a resistive material are doubled

A) The resistance is doubled and the resistivity is halved

B) The resistance is halved and the resistivity is doubled

C) The resistance is halved and the resistivity remains the same
D) The resistance is doubled and the resistivity remains the same

How many select lines are contained in a multiplexer with 2048 inputs and one
output ?

A) 2048 B) 1024

@) 11 D) 10

A Transformer cannot raise or lower the DC voltage because

A) Faraday’s Laws of Electromagnetic induction is not valid since the rate of
change of flux is zero

B) There is no self inductance

C) DC circuit has more losses

D) None of the above

Data can be changed from temporal code to spacial code by using
A) Serial-in, serial-out, shift register

B) Serial-in, parallel-out, shift register

C) Parallel-in, parallel-out, shift register

D) Parallel-in, serial-out, shift register

In an AVR, to set all the bits in a register R2 to 1, we must OR the register R2 with
A) 00H B) 11H

C) FFH D) OFH

In a PLL, when the input is applied and the Voltage Controlled Oscillator (VCO) starts
to change the frequency it is said to be in

A) Free running mode B) Capture mode

C) Phase locked state D) None of the above