The peak voltage in the output of a half-wave rectifier is \(30 ~\text{V}.\) The RMS voltage of the output wave is: (assuming no distortion in wave) 
1. \(\dfrac{30}{\sqrt2}~\text{V}\) 2. \(15 ~\text{V}\)
3. \(\dfrac{15}{\sqrt2}~\text{V}\) 4. \(10 ~\text{V}\)
Subtopic:  Rectifier |
Level 3: 35%-60%

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In which of the following circuits is the current through the resistor \((R)\) always in the same direction (during both cycles), when \(\text{AC}\)-voltage is applied across \(A,B?\)
1. \(A\) 2. \(B\)
3. Both \(A\) & \(B\) 4. Neither \(A\) nor \(B\)
Subtopic:  Rectifier |
 55%
Level 3: 35%-60%

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


The voltage applied across \(AB\) is a \(50~\text{Hz}\) – AC with a peak voltage of \(300~\text V.\) The diode \(D_1\) is ideal. The current \(i,\) flowing in the direction indicated, is:
    
1. AC with average zero
2. constant at \(3~\text A\)
3. unidirectional, but varying with time and peak value of \(3~\text A\)
4. unidirectional, but a positive peak of \(3~\text A\) and negative peak of \(1~\text A\)
Subtopic:  Rectifier |
 74%
Level 2: 60%+

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


advertisementadvertisement

In the circuit shown in the figure (i), the (ideal) diode \(D_1\) has negligible resistance (in forward bias). The voltage \((V_A-V_B)=V_{AB}\) is time varying, as shown in the figure (ii):
   
The current through the resistance \(R=100~\Omega\) has a maximum positive value of:
1. \(0.05~\text A\)
2. \(0.1~\text A\)
3. \(0.025~\text A\)
4. \(500~\text A\)
Subtopic:  Rectifier |
 76%
Level 2: 60%+

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In the circuit shown in the figure (i), the (ideal) diode \(D_1\) has negligible resistance (in forward bias). The voltage \((V_A-V_B)=V_{AB}\) is time varying, as shown in the figure (ii):
  
The diode \(D_1\) conducts during:
1. \(PQ\) 2. \(QR\)
3. \(RS\) 4. \(SP'\)
Subtopic:  Rectifier |
 74%
Level 2: 60%+

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In the circuit shown in the figure (i), the (ideal) diode \(D_1\) has negligible resistance (in forward bias). The voltage \((V_A-V_B)=V_{AB}\) is time varying, as shown in the figure (ii):
  
The current \((i)\) through the resistance \(R=100~\Omega\) is:
1. positive during all phases
2. positive during phase \(PQ\)
3. positive during phase \(QR\)
4. positive during phase \(SP'\)
Subtopic:  Rectifier |
 75%
Level 2: 60%+

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


advertisementadvertisement