# A TEM wave is incident normally upon a perfect conductor. The E and H fields at the boundary will be, respectively

1.  minimum and minimum

2.  maximum and maximum

3.  minimum and maximum

4.  maximum and minimum

4

minimum and minimum

Explanation :
No Explanation available for this question

# The frequency range for satellite communication is

1.  1 KHz to 100 KHz

2.  100 KHz to 10 KHz

3.  10 MHz to 30 MHz

4.  1 GHz to 30 GHz

4

1 GHz to 30 GHz

Explanation :
No Explanation available for this question

# If the diameter of a λ/2 dipole antenna is increased from   to  , λ/100 to λ/50 , then its

1.  bandwidth increases

2.  bandwidth decreases

3.  gain increases

4.  gain decreases

4

bandwidth decreases

Explanation :
No Explanation available for this question

# The circuit of Fig.P1.25 represents a

1.  low pass filter

2.   high pass filter

3.  band pass filter

4.  band reject filter

4

band pass filter

Explanation :
No Explanation available for this question

# The eigen values of the matrix are

1.   2, -2, 1, -1

2.  2, 3, -2, 4

3.  2, 3, 1, 4

4.  None of the above

4

2, 3, -2, 4

Explanation :
No Explanation available for this question

# A  linear  time  invariant  system  has  an  impulse  response e2t ,t>0 If  the  initial conditions are zero and the input is  e3t  the output for t > 0 is

1.   e3t –e2t

2.  e5t

3.  e3t +e2t

4.  None of the above

4

None of the above

Explanation :
No Explanation available for this question

# In  the  circuit  of  Fig.P2.5,  assume  that  the  transistor  is  in active region. It has a large β and its base-emitter voltage is 0.7V. The value of  Ic is

1.  Indeterminate since  c R is not given

2.  1 mA

3.  5 mA

4.  10 mA

4

Indeterminate since  c R is not given

Explanation :
No Explanation available for this question

# If the op-amp in Fig.P2.6, has an input offset voltage of 5 mV and an open-loop voltage gain of 10,000, then  v0 will be

1.  0V

2.  5 mV

3.  +15 V or –15 V

4.  +50 V or –50 V

4

+50 V or –50 V

Explanation :
No Explanation available for this question

# For the logic circuit shown in Fig.P2.7, the simplified Boolean expression for the output Y is

1.  A+B+C

2.  A

3.  B

4.  C

4

C

Explanation :
No Explanation available for this question

1.  10 V

2.  5 V

3.  4 V

4.  8 V

4