What is the equivalent impedance seen by the voltage source

1.  28.281350

2.  10-900

3.  6900

4.  6-900

View Answer  
4
Correct Answer :

28.281350


Explanation :
No Explanation available for this question

Drift current in a p-n junction is influenced by

1.  Applied voltage

2.  Concentration gradient

3.  Concentration

4.  All of these

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4
Correct Answer :

Applied voltage


Explanation :
No Explanation available for this question

In a circuit, voltage & current are given by:The power consumed in the circuit is

1.  100W

2.  50W

3.  25W

4.  12.5W

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4
Correct Answer :

25W


Explanation :
No Explanation available for this question

Drift plus diffusion current density of electron is expressed as

1.  Jn=qnE+qDndn/dx

2.  Jn=qnE-qDndn/dx

3.  Jn=qnE-AqDndn/dx

4.  None

View Answer  
4
Correct Answer :

Jn=qnE+qDndn/dx


Explanation :
No Explanation available for this question

An ideal transformer is i. An abstract concept ii. One where the voltage and current relations are derived from Faraday’s Law and Ampere’s law respectively iii. Is characterized by a single parameter n, the turns ratio. Tick out the correct option

1.  (i)&(ii)

2.  (i)&(iii)

3.  (ii)&(iii)

4.  (i) (ii)&(iii)

View Answer  
4
Correct Answer :

(i) (ii)&(iii)


Explanation :
No Explanation available for this question

The ratio of diffusion constant to mobility of carrier

1.  depends on temperature

2.  Depends on type of semiconductor

3.  Varies with lifetime

4.  Universal constant

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4
Correct Answer :

depends on temperature


Explanation :
No Explanation available for this question

Reciprocity theorem is applicable to a network 1. Which contains R,L & C as elements 2. Initially relaxed system 3. Which has both independent and dependent sources Tick out the correct combination:

1.  1 & 2

2.  1 & 3

3.  2 & 3

4.  1, 2 & 3

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4
Correct Answer :

1 & 2


Explanation :
No Explanation available for this question

If the current in the 7resistor branch is 0.5A as shown in the figure. Now if the source is connected in series with 7branch and terminals AB are shorted, the current in 5 resistor is

1.  1A

2.  0.5A

3.  9.75A

4.  None of these

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4
Correct Answer :

0.5A


Explanation :
No Explanation available for this question

Electron mobility for si material is (a) Constant for electrical field intensity (b) Constant at all field values (c) Inversely proportional to between (d) inversely proportional to Ex at pinch off voltage

1.  all of these

2.  b

3.  c and d

4.  a, c and d

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4
Correct Answer :

a, c and d


Explanation :
No Explanation available for this question

Match the following pairs: Filter Transmission Zeros a. Low Pass 1. Infinity b. High Pass 2. Origin c. Band Pass 3. Some at infinity & some at origin

1.  a-1;b-3;c-2

2.  a-1;b-2;c-3

3.  a-2;b-1;c-3

4.  a-3;b-1;c-2

View Answer  
4
Correct Answer :

a-1;b-2;c-3


Explanation :
No Explanation available for this question
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