WorksheetsQuiz 1_COE67-211
Total questions: 15
Worksheet time: 8mins
On a physical diode component, how is the cathode typically identified?
By a stripe mark
It is the longer of the two leads
By a red dot
It is the thicker of the two leads
What is the process called where electrons move from an area of high concentration to an area of lower concentration?
Depletion
Bias
Rectification
Diffusion
The depletion region in a PN junction is formed because...
of the application of an external voltage.
electrons and holes combine and cancel their net charges at the junction.
the effect of temperature on the semiconductor.
the movement of the entire P-type material.
For a diode to become forward-biased, the voltage across it must be...
exactly zero volts.
less than the diode's threshold voltage.
greater than the diode's threshold voltage.
equal to the breakdown voltage.
Which of the following polarity arrangements describes a reverse-biased condition?
The P-type material is more positive than the N-type.
The P-type material is more negative than the N-type.
The anode and cathode are at the same potential.
Current flows freely through the junction.
According to the practical diode's I-V characteristic curve, the Breakdown Region occurs when...
v > 0
v < -Vzk
-Vzk < v < 0
v = 0.7 V
Which specialized type of diode is designed to emit light when forward-biased?
Zener Diode
Photodiode
Schottky Diode
Light Emitting Diode
In the block diagram of a typical power supply, what component immediately follows the Rectifier stage?
Transformer
Regulator
Filter
AC Source
Besides the bridge type, what is the other full-wave rectifier configuration shown in the presentation?
A single diode with a capacitor
A transformer with a center-tapped secondary winding
A Zener diode and a resistor
A voltage multiplier
What is the main function of a voltage multiplier circuit?
To produce a DC output voltage that is greater than the AC input voltage
To regulate the output voltage to a constant level
To convert DC back into AC
To limit the current flowing through the circuit
A voltage doubler uses which principle to increase the peak rectified voltage?
Rectifying action
Clipping action
Filtering action
Clamping action
For the voltage tripler circuit shown in the presentation, what is the Peak Inverse Voltage (PIV) that each diode must be able to withstand?
Vp
2Vp
3Vp
0.5Vp
The presentation states that the barrier potential for Silicon (Si) is 0.7V. What is the value given for Germanium (Ge)?
1.0 V
0.7 V
0.3 V
0.5 V
According to the ideal diode model, if the voltage 'v' across the diode is less than zero, what is the current 'i'?
i > 0
i < 0
i is infinite
i = 0
Diode rectifiers, a fundamental application of diodes, are typically found in what common piece of electronic equipment?
Speakers
Power supplies
Antennas
Microphones
