# A pn silicon is forward biased at a current of 2 ma. The hole life time in the n region is 0.1.Neglected capacitance of diode .The diode impedance at 1MHZ is

1.  (11.75-j3.75)Ω

2.  (23.5-j7.5)Ω

3.  (38.7-j12.1)Ω

4.  None of these

4

(23.5-j7.5)Ω

Explanation :
No Explanation available for this question

# The equivalent resistance between A and B is

1.  1

2.  (1/3)

3.  (4/3)

4.  (1/2)

4

(1/2)

Explanation :
No Explanation available for this question

# For a p-n junction match the type of break down with phenomenon Phenomenon Type 1.Rupture of covalent bonds a.Avalanche breakdown 2.Early effect b.zener breakdown 3.Collision of carrier with crystal ions c.Punch through

1.  a-3 b-2 c-1

2.  a-3 b-1 c-2

3.  a-1b-2 c-3

4.  a-1 b-3 c-2

4

a-1b-2 c-3

Explanation :
No Explanation available for this question

# The input impedance Rin for the network shown in figure will be

1.  (1+√5)/2

2.  (√5-1)/2

3.  (√3+1)/2

4.  (√3-1)/2

4

(1+√5)/2

Explanation :
No Explanation available for this question

# Twelve 1F capacitors are used as edges to form a cube. The equivalent impedance seen between the two diagonally opposite corners of the cube is

1.  6/5

2.  5/6

3.  5/3

4.  None of these

4

6/5

Explanation :
No Explanation available for this question

# The Thevenin equivalent resistance Rth of the following circuit is

1.  1

2.   2

3.  4

4.  Infinity

4

2

Explanation :
No Explanation available for this question

# In the following circuit, what should be the value RL such that maximum power transfer takes place

1.  (3/2)

2.  6

3.  (9/2)

4.  12

4

(3/2)

Explanation :
No Explanation available for this question

# The following network can be represented as resistor of

1.  150.5

2.  50.5

3.  100

4.  25.5

4

50.5

Explanation :
No Explanation available for this question

# For which value of RL, power dissipation across the given circuit is maximum

1.  1

2.  11.18

3.  21.2

4.  15.2

4

11.18

Explanation :
No Explanation available for this question

# In the following figure R1, R2and R3 are fixed. To obtain maximum voltage (V0). What should be the turns ratio if R1=R2=200 and R=10

1.  n:110:1

2.  n:15:1

3.  n:11:10

4.  None of these

4