WorksheetsIEC - PART 1
Total questions: 15
Worksheet time: 9mins
Which of the following is correct about semiconductors in electronic devices?
Elemental semiconductors have direct band gap
Compound semiconductors have indirect band gap
Doping is done in Intrinsic semiconductors
Extrinsic semiconductors are injected with impurities
Which of the following constitutes Zener diode?
Oscillator
FiIter
Regulator
Rectifier
What rectifier does?
Converting AC to AC
Converting DC to AC
Converting AC to DC
Converting DC to DC
Which of the following semiconductor is mostly used to construct electronic circuits?
Si
Ge
Sn
Cu
Power Gain Ap=
(a)
What is the range of the radio frequency amplifier?
20Hz to 20KHz
100KHz to Over 1 GHz
1Hz to 100Hz
20KHz
How to Calculate the cut-off frequency of an amplifier?
(a)
Negative feedback Gain
Av/1-BAv
Av/1+BAv
Av/1-BAp
In Ladder Network Oscillator, R1 & R2 providing ________ and R3 & C1 providing _______
Emitter stabilizer, base bias potential
Emitter potential, base bias stabilizer
base bias potential, Emitter stabilizer
Determine the frequency of oscillator of a three-stage ladder network oscillator in which C=10 nF, R=10 K Ohm
647 Hz
674 Hz
634 Hz
What is the minimum amplifier gain in wien bridge amplifier
3
3.5
4
1
When R1=R2, C1=C2, what is the output frequency of Wein Bridge Oscillator
1/2πLC
1/2πRC
2πLC
RC/2π
How many capacitors are used for Voltage doubler circuit.
C1, C3
C1, C2
C1=C2=C
The following data were obtained during a test carried out on a DC power supply Input Current = 2A, Output Voltage = 12 V, and Output Current = 2A, find output resistance
3V
4V
5V
6V
DC power supply complete Circuit?
(a)
