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WorksheetsSemiconductor and Circuit Quiz
Total questions: 29
Worksheet time: 40mins
The energy gap in a semiconductor is typically:
0 eV
> 5 eV
1 eV
< 0 eV
A pure semiconductor is called:
Extrinsic
Intrinsic
Doped
Alloyed
Which of the following is a pentavalent impurity?
Boron
Indium
Gallium
Arsenic
The unit of electron charge is:
1.6 × 10⁻¹⁹ C
9.1 × 10⁻³¹ C
3.2 × 10⁻¹⁹ C
1.6 × 10⁻¹⁹ V
The typical forward voltage drop across a silicon diode is:
0.1 V
0.3 V
0.7 V
1.1 V
The formula used to find the capacitance C is __________
Q/v
Qv
Q-v
Q + v
If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.
5062.5W
-506.25W
50.625W
50625W
If two resistances of 9 Ω and 6 Ω are connected in parallel, the total resistance is
54 Ω
0.3 Ω
15 Ω
3.6 Ω
Four 10F capacitors are connected in series, calculate the equivalent capacitance.
1.5F
2.5F
3.5F
0.5F
Calculate the charge in the circuit.
66.67C
20.34C
25.45C
30.45C
What is the combined resistance between P and Q?
4 Ω
6 Ω
8 Ω
12 Ω
Which of the following is the total resistance of the resistors in parallel?
20 Ω
40 Ω
90 Ω
180 Ω
The current gain (β) of a transistor is given by:
IE / IB
IB / IE
IC / IB
IB / IC
In saturation mode, a BJT behaves like:
Open switch
Closed switch
Capacitor
Amplifier
The emitter in a transistor is:
Lightly doped
Moderately doped
Heavily doped
Not doped at all
A Zener diode is primarily used for:
Amplification
Rectification
Voltage regulation
Oscillation
The ideal diode acts like a ______ in forward bias.
Short circuit
Open circuit
Battery
Resistor
Peak inverse voltage (PIV) of a diode is:
Maximum forward voltage
Maximum reverse voltage before breakdown
Minimum voltage across the diode
Voltage drop across resistor
Which diode is used in high-frequency applications?
Zener diode
Schottky diode
Tunnel diode
LED
Determine VCB in the transistor circuit shown in Fig. The transistor is of silicon and has β = 150.
Use the ideal diode, find load voltage and load current
Calculate a Load voltage and load current for a given circuit
Identify the forward and reverse biased diodes
Find a load voltage and load current for diode(Ge)
Calculate the base current in fig. what is the voltage across the base resistor? The collector current if β = 200
What is collector to emitter voltage in fig. use ideal transistor
Calculate the current through a 48 ohm resistor in the circuit shown in fig. assume the diodes to be of silicon and forward resistance of each diode is 1 ohm
Calculate a Q point Value (Vce, Ic)
At what voltage the reverse current flowing through a diode(ge) will reach 90% of its saturation value at room temperature.
