# In the circuit shown below what is the output voltage(Vout) if a silicon transistor Q and an ideal op-amp are used

1.  -15v

2.  -0.7v

3.  +0.7v

4.  +15v

4

-0.7v

Explanation :
No Explanation available for this question

# Consider a delta connection of resistors and its equivalent star connection as shown below. If all elements of the delta connection are scaled by a factor k,k>0, the elements of the corresponding star equivalent will be scaled by a factor of

1.  k2

2.  k

3.  1/k

4.  √k

4

k

Explanation :
No Explanation available for this question

# For 8085 microprocessor, the following program is executed. MVI A, 05H; MVI B, 05H; PTR: ADD B; DCR B; JNZ PTR; ADI 03H; HLT; At the end of program, accumulator contains

1.  17H

2.  20H

3.  23H

4.  05H

4

17H

Explanation :
No Explanation available for this question

# The bit rate of a digital communication system isR kbits/s. The modulation used is 32-QAM. The minimum bandwidth required for ISI free transmission is

1.  R/10 HZ

2.  R/10 KHZ

3.  R/5 HZ

4.  R/5 KHZ

4

R/10 KHZ

Explanation :
No Explanation available for this question

# For a periodic signal  v(t)=30sin 100t+10 cos 300t+6 sin(500t+π/4) the fundamental frequency in rad/s is

1.  100

2.  300

3.  500

4.  1500

4

100

Explanation :
No Explanation available for this question

# In a voltage-voltage feedback as shown below, which one of the following statements is TRUE if the gain k is increased d

1.  The input impedance increases and output impedance decreases

2.  The input impedance increases and output impedance also increases

3.  The input impedance decreases and output impedance also decreases.

4.  The input impedance decreases and output impedance increases.

4

The input impedance increases and output impedance decreases

Explanation :
No Explanation available for this question

# A band-limited signal with a maximum frequency of 5kHz is to be sampled. According to the sampling theorem, the sampling frequency which is not valid is

1.  5 kHz

2.  12 kHz

3.  15 kHz

4.  20 kHz

4

5 kHz

Explanation :
No Explanation available for this question

# In a MOSFET operating in the saturation region, the channel length modulation effect causes

1.  an increase in the gate-source capacitance

2.  a decrease in the transconductance

3.  a decrease in the unity-gain cutoff frequency

4.  a decrease in the output resistance

4

a decrease in the output resistance

Explanation :
No Explanation available for this question

# Which one of the following statements is NOT TRUE for a continuous time causal and stable LTI system

1.  All the poles of the system must lie on the left side of the jω axis.

2.  Zeros of the system can lie anywhere in the s-plane

3.  All the poles must lie within s?=1

4.  All the roots of the characteristic equation must be located on the left side of the jω axis.

4

All the poles must lie within s?=1

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  2

4.  3

4