Match List-I(type of antenna) with List-II(communication system being such an antenna) and select the correct answer using the code given below the lists: List-I List-II 1.Turnstile 1. RADAR 2.Yagi 2. TV transmission 3.Dish 3. MW broadcasting 4.Vertical mast 4. TV reception

1.   A B C D 4 2 3 1

2.   A B C D 2 4 1 3

3.   A B C D 2 4 3 1

4.   A B C D 4 2 1 3

View Answer  
4
Correct Answer :

A

B

C

D

2

4

3

1

Explanation :
No Explanation available for this question

The output of the circuit shown in the figure is equal to

1.  0

2.  1

3.  

4.  

View Answer  
4
Correct Answer :

0


Explanation :
No Explanation available for this question

The minimum number of NAND gates required to implement the Boolean function

1.  zero

2.  1

3.  4

4.  7

View Answer  
4
Correct Answer :

zero


Explanation :
No Explanation available for this question

A switch-tail ring counter is made by using a single D flip-flop. The resulting circuit is a

1.  SR flip-flop

2.  JK flip-flop

3.  D flip-flop

4.  T flip-flop

View Answer  
4
Correct Answer :

T flip-flop


Explanation :
No Explanation available for this question

Schottky clampint is resorted to in TTL gates

1.  to reduce propagation delay

2.  to increase noise margins

3.  to increase packing density

4.  to increase fan-out

View Answer  
4
Correct Answer :

to reduce propagation delay


Explanation :
No Explanation available for this question

A pulse train can be delayed by a finite number of clock periods using

1.  a serial-in serial-out shift register

2.  a serial-parallel-out shift register

3.  a parallel- in serial-out shift register

4.  a parallel-in parallel- out shift register

View Answer  
4
Correct Answer :

a serial-in serial-out shift register


Explanation :
No Explanation available for this question

A 12-bit ADC is operating with a μ sec clock period and the total conversion time is seen to be 14 μ sec. The ADC must be of the

1.  flash type

2.  counting type

3.  integrating type

4.  successive approximation type

View Answer  
4
Correct Answer :

flash type


Explanation :
No Explanation available for this question

The number of bits in a binary PCM system is increased from n to n+1. As a result, the signal to quantization noise ratio will improve by a factor

1.  n +1/n

2.  2(n+1)/n

3.  22(n+1)/n

4.  which is independent of n

View Answer  
4
Correct Answer :

which is independent of n


Explanation :
No Explanation available for this question

Which one of the following combinations of open-circuit voltage and Thevenin’s resistance represents the Thevenin’s equivalent of the circuit

1.  1V, 10

2.  1V, 1k

3.  1mV, 1k

4.  1mV, 10

View Answer  
4
Correct Answer :

1V, 1k


Explanation :
No Explanation available for this question

The value of resistance R in the shown in figure below is varied in such a way that power dissipated in 3resistor is maximum. Under this condition, the value of R will be

1.  3

2.  9

3.  12

4.  6

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question
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