Diodes and Applications - General Questions Online Exam Quiz
Diodes and Applications - General Questions GK Quiz. Question and Answers related to Diodes and Applications - General Questions. MCQ (Multiple Choice Questions with answers about Diodes and Applications - General Questions
What is a varistor?
Options
A : a voltage-dependent resistor
B : a voltage-dependent diode
C : a current-dependent resistor
D : a current-dependent diode
Which type of transformer is required to create a 180 degree input to a rectifier?
Options
A : center-tapped secondary
B : step-down secondary
C : stepped-up secondary
D : split winding primary
What circuit activity may shift a characteristic curve so that diode operating points are different?
Options
A : higher power (heat)
B : higher resistance
C : lower voltage
D : lower current
What is wrong with this diode?
Options
A : open
B : short
C : nothing
D : not enough data
The dc current through each diode in a bridge rectifier equals:
Options
A : the load current
B : half the dc load current
C : twice the dc load current
D : one-fourth the dc load current
When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is considered to be:
Options
A : not working
B : forward biased
C : reverse biased
D : an open switch
In a power supply diagram, which block indicates a smooth dc output?
Options
A : transformer
B : filter
C : rectifier
D : regulator
If a 169.7 V half-wave peak has an average voltage of 54 V, what is the average of two full-wave peaks?
Options
A : 119.9 V
B : 108.0 V
C : 115.7 V
D : 339.4 V
What is the current through the LED?
Options
A : 0 mA
B : 23 mA
C : 18 mA
D : 13 mA
The characteristic curve for the complex model of a silicon diode shows that
Options
A : the barrier potential is 0 V
B : the barrier potential stays fixed at 0.7 V
C : the barrier potential increases slightly with an increase in current
D : the barrier potential decreases slightly with an increase in current
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