# Radiation pattern of loop antenna is

1.  Cardiod

2.  Semi-circle

3.  Circle

4.  None of the above

4

Cardiod

Explanation :
No Explanation available for this question

# The power in a series R-L-C circuit will be half of that at resonance when the magnitude of the current is equal to

1.  V/2R

2.   V/√3R

3.  V/√2R

4.  √2V/R

4

V/√2R

Explanation :
No Explanation available for this question

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

1.  A serial-in-serial shift register

2.  A serial-in-parallel-out shift register

3.  A parallel- in serial- out shift register

4.  A serial-in parallel-out shift register

4

A serial-in-serial shift register

Explanation :
No Explanation available for this question

# The minimum number of NAND gates required to implementis equal to

1.  Zero

2.  1

3.  4

4.  7

4

Zero

Explanation :
No Explanation available for this question

# Parabolic and lens antennas are used extensively

1.   SW

2.  MW

3.  Microwaves

4.  All of the above

4

Microwaves

Explanation :
No Explanation available for this question

# Consider the following statements regarding the circuit shown in the given figure 1. If the switch K is closed at a proper instant there will be no transient. 2. The instant at which K is closed such that the transient is zero depends on the frequency of the supply. 3. The instant at which K is closed such that the transient is zero depends on the circuit elements. 4. There will always be a non-zero transient after the switch K is closed. Of these elements

1.  1 alone is correct

2.   1 and 2 are correct

3.  1 and 3 are correct

4.  4 alone is correct

4

1 and 3 are correct

Explanation :
No Explanation available for this question

# The dual of the Boolean theorem A. (B +C) = A. B +A. C is

1.  A + (B +C) = A. B +A. C

2.  A. (B + C) = (A + B) (A + C)

3.  A + B.C = (A + B) (A + C)

4.  None of these

4

A + B.C = (A + B) (A + C)

Explanation :
No Explanation available for this question

# In the circuit shown in the given, the switch S is open for a long time and closed at t = 0 The value I at t = 0+ is

1.  -6A

2.  -3/2 A

3.  3 A

4.  9/2 A

4

-6A

Explanation :
No Explanation available for this question

# Bandwidth of an antenna is

1.  Directly proportional to Q

2.  Inversely proportional to Q

3.  Directly proportional to Q2

4.  Inversely proportional

4

Inversely proportional to Q

Explanation :
No Explanation available for this question

# The switching speed of ECL is very high, because

1.  The transistors are switched between cut-off and saturation regions

2.  The transistors are switched between active and saturation regions

3.  The transistors are switched between active and cut-off saturation regions

4.  The transistors may operate in any of three regions

4