Which of the following Boolean Expressions correctly represents the relation
between P,Q,R and M_{1}

**A. ** M1 = (PORQ) XOR R

**B. ** M1 = (PANDQ) XOR R

**C. ** M1 = (PNORQ) XOR R

**D. ** M1 = (PXORQ) XOR R

**Answer : ****Option D**

**Explaination / Solution: **

Workspace

Report

In the following circuit, the comparators output is logic “1” if V1 > V2 and is logic "0" otherwise. The D/A conversion is done as per the relationVolts, where b3 (MSB), b1,b2 and b0 (LSB) are the counter outputs. The counter starts from the clear state.

The magnitude of the error between VDAC and Vin at steady state in volts is

No Explaination.

Workspace

Report

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown below is

Workspace

Report

The drain current of MOSFET in saturation is given by where K is a constant. **A. **

**B. **

**C. **

**D. **

**Answer : ****Option B**

**Explaination / Solution: **

The magnitude of the transconductance g_{m} is

Workspace

Report

Two identical NMOS transistors M1 and M2 are connected as shown below.
V_{bias} is chosen so that both transistors are in saturation. The equivalent g_{m} of
the pair is defied to be at constant V_{out}

**A. ** the sum of individual gm's of the transistors

**B. ** the product of individual gm’s of the transistors

**C. ** nearly equal to the gm of M1

**D. ** nearly equal to gm/g0 of M2

**Answer : ****Option C**

**Explaination / Solution: **

No Explaination.

The equivalent g_{m} of the pair is

No Explaination.

Workspace

Report

Consider the amplitude modulated (AM) signal For demodulating the signal using envelope detector, the minimum value of A_{c} should be

**A. ** 2

**B. ** 1

**C. ** 0.5

**D. ** 0

**Answer : ****Option A**

**Explaination / Solution: **

Workspace

Report

A rectangular waveguide of internal dimensions (a = 4 cm and b = 3 cm) is to be operated in TE11 mode. The minimum operating frequency is

Workspace

Report

Consider a Binary Symmetric Channel (BSC) with probability of error being p. To transmit a bit, say 1, we transmit a sequence of three 1s. The receiver will interpret the received sequence to represent 1 if at least two bits are 1. The probability that the transmitted bit will be received in error is

**A. **
**B. ** p3

**C. ** (1 - p3)
**D. ** p3 + p2(1 - p)

**Answer : ****Option D**

**Explaination / Solution: **

No Explaination.

p^{3 }+ 3p^{2}(1 - p)

No Explaination.

Workspace

Report

In the following network, the switch is closed at t = 0^{-} and the sampling starts from t = 0. The sampling frequency is 10 Hz.

The samples x(n), n = (0, 1, 2, ...) are given by

5(1 - *e*^{-}^{0.05n})^{}

No Explaination.

Workspace

Report

The magnitude of frequency responses of an underdamped second order system is 5 at 0 rad/sec and peaks to 10/√3 at 5√2 rad/sec. The transfer function of the system is

Workspace

Report