Worksheetsanalog electronics quiz
Total questions: 20
Worksheet time: 40mins
The abbreviation PIV in the case of a diode stands for ____________
Peak Inferior Voltage
Problematic Inverse Voltage
Peak Inverse Voltage
Peak Internal Voltage
The diode current equation is not applicable in ____________
Forward biased state
Reverse biased state
Unbiased state
It is applicable in all bias states
What happens to cut-in voltage when the temperature increases?
Cut-in voltage increases
Cut-in voltage decreases
Cut-in voltage either increases or decreases
Cut-in voltage doesn’t depend on temperature
When temperature increases, reverse saturation current _________
Increases
Decreases
Doesn’t depend on temperature
Either increases or decreases
The input voltage V1 of the circuit the circuit is 2V and resistor has a resistance of 1KΩ. The cut-in voltage of the silicon diode is 0.7V and the reverse saturation current is 10-8A. The temperature at which diode operates is 30°C. The voltage across resistor when diode starts conducting is _________________
0.7V
1.3 V
.306 V
1.7 V
If V1 is 5V and resistance R1 is 5KΩ and the cut-in voltage of the diode is 0.7V, what will be the voltage Vout across the diode? Take reverse saturation current as 10-8A and operating temperature as 25°C.
0V
-4.5V
-5V
-3.2V
Ripple factor of half wave rectifier is _________
1.414
1.21
1.3
0.48
If input frequency is 50Hz then ripple frequency of half wave rectifier will be equal to __________
100 Hz
50 Hz
25 Hz
500 Hz
Transformer utilization factor of a half wave rectifier is equal to __________
0.267
0.287
0.297
0.256
If peak voltage on a half wave rectifier circuit is 5V and diode cut-in voltage is 0.7, then peak inverse voltage on diode will be __________
3.6V
4.3V
5V
5.7V
In a half wave rectifier, the input sine wave is 250sin100 ᴨt Volts. The output ripple frequency of rectifier will be __________
100 Hz
200 Hz
50 Hz
25 Hz
In the circuit Vin = 4V, VB = 3V, R = 5K. The voltage across diode V is __________
1V
4V
3V
7V
In the circuit below Vin = 4V, R = 2K and VB = 2V. In these conditions the voltage across ideal diode V is __________
-4 V
-2 V
2 V
0 V
In the circuit shown in below I = 2mA, VB = 2V and R = 2K. The voltage V will be _________
2V
-2V
-4V
1V
What is quiescent point or Q-point?
Operating point of device
The point at which device have maximum functionality
The point at which current equal to voltage
The point of V-I graph where slope is 0.5
The threshold voltage of a diode at Antarctica and India were found to be V1 and V2 respectively. Which of the following relations between V1 and V2 hold good?
V1 > V2
V1 = V2
V1 < V2
Can’t be determined
Reverse collector saturation current ICBO is __________
Collector current when emitter current is zero
Collector current when base current is zero
Same as reverse saturation current
Collector current when either emitter or base current is zero
Which of the following statement about a common base transistor is true?
Very low input impedance
Very low output Impedance
Current gain is greater than unity
Voltage gain is very low
At saturation, which of these is not true for a BJT?
The collector current IC cannot increase further
The base current IB, cannot increase further
The collector-to-emitter voltage, VCE is due to the non-zero internal resistance of BJT
VCE(saturation) is the minimum voltage drop between C and E
How is BJT used as a faster switch?
By operating it in the saturation and cut-off region
By operating it in the active and cut-off region
By using it in strong saturation
By decreasing its ON resistance
