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WorksheetsSemiconductor Diodes
Total questions: 30
Worksheet time: 15mins
Component that Convert AC to DC and allow current to flow in one Direction
Capacitor
Diode
Inverter
Resistor
Anode is _________ Polarity in diodes
Negative
Positive
Ground
Hot Side
Types of diodes used in lighting system and display
LED
zener diodes
rectifier diodes
schottky
What is the name of this Diode?
PN junction
LED
silicon
PNP
Diode has polarity
anode and cathode
on and off
output and input
none of the above
The region on either side of the junction which becomes free from the mobile charge carriers is called
Energy gap region
Charge free region
Diffusion region
Depletion region
Characteristics of a diode that helps in rectification
Allows Unidirectional flow of current
Allows Bidirectional flow of current
Opposes the flow of current
conducts in reverse biased
In the forward bias arrangement of a p-n junction diode,
the n-end is connected to the positive terminal of the battery
the p-end is connected to the positive terminal of the battery
the direction of current is from n-end to p-end in the diode
the p-end is connected to the negative terminal of the battery
which statement is correct? (the dark circles represent the electrons)
p-type of the diode is connected to the negative terminal.
Electron moves across the p-n junction, makes the diode forward biased
current will not flow in the circuit
reverse biased circuit
During formation of p-n junction
an electron diffuses from n to p side
a hole diffuses from p to n side
a hole diffuses from n to p side
an electron diffuses from p to n side
In the forward bias arrangement of a p-n junction diode,
the n-end is connected to the positive terminal of the battery
the p-end is connected to the positive terminal of the battery
the direction of current is from n-end to p-end in the diode
the p-end is connected to the negative terminal of the battery
Doping of Semiconductors
materials which can conduct electricity better than insulator, but not as well as conductors.
The process of adding of a certain amount of specific impurities atoms in the pure semiconductor.
when 4 electrons in outermost orbit.
The process of adding an impurity to an intrinsic semiconductor is called
Doping
Ionization
Recombination
Atomic modification
Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of
diode
semiconductor
conductor
insulator
superconductor
what is the meaning of rectification?
a process of smoothing using a capacitor
a process of adding impurities to pure materials
a process of converting an alternating current into a direct current by using a diode.
This is a graph that is seen on CRO. How is it change after full wave rectification process?
Number of diodes a Bridge Rectifier has
1
4
2
3
The characteristics of p-type semiconductors is includes
Majority carriers are holes
Has tendency to gain electron
Has tendency to donor electron
Easy to conduct electricity
Which of the following statements is NOT the diode application in electronic circuit?
Diode as voltage regulator
Diode as Rectifier
Diode as Amplifier
Diode as solar cell
The minority carriers in P-type silicon are called _________________
Neutron
Proton
Electron
Hole
Basic building blocks of all electronic circuits are
Devices in which there is a flow of electrons
devices in which there is no flow of electrons
devices in which there is a controlled flow of electrons
devices in which there is an uncontrolled flow of electrons
These are the characteristics of Trivalent impurities except
•3 valence electrons
•produce p-type semiconductors
•producing a "hole".
Antimony, arsenic, and phosphorus are the examples
What is the most common semiconductor material used for producing integrated circuits
Quartz
Silicon
Diamond
Tantalum
How is conduction increased in an p-type semiconductor?
by increased applied electrical field
by decreased applied electrical field
by the availability of extra holes
by the availability of donor electrons
Diagram shows a circuit consisting of a diode and a bulb. When the switch is on, the bulb does not light up. What needs to be done to light up the bulb?
replace the diode with a new one
reverse the connection of the diode
increase the number of bulbs
connect a resistor in series with the bulb
Diagram shows four identical bulbs, P, Q, R and S, and four electronic components connected in a circuit. Which of the following bulbs will light up continuously when the switch is on?
P and Q only
P, Q and R only
R and S only
P, Q and S only
Which of the following graph shows a half-wave rectification with smoothing?
Which of the following rectifier circuit shows full-wave rectification with smoothing?
Which of the following is not correct about capacitor?
Connected in parallel to the load resistor
Produce a smoother and steadier d.c. voltage
Discharged when there is no current flow in the circuit
Lower capacitance will produce smoother d.c. voltage
