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WorksheetsBasic Electronics
Total questions: 15
Worksheet time: 3mins
Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of
diode
semiconductor
conductor
insulator
superconductor
Which is not one of the properties of semiconductor?
4 electrons in outermost orbit, in covalent bonding.
atoms vibrate causes electron to break free from the bonds.
Electron free leaves hole.
Semiconductor has 2 types of charge carriers.
all of the above are the properties of it
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
The characteristics of p-type semiconductors is includes
Majority carriers are electron
Has tendency to gain electron
Has tendency to donor electron
Easy to conduct electricity
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
The potential difference created across the P-N junction due to the diffusion of electrons and holes is called___________
potential barrier
back emf
instantaneous speed
what is a diodes function
allows current to flow in one direction
allows current to flow in two directions
is a resistor
when a Diode is used as a half wave rectifier ....
It rectifies only one half of the input AC signal
It rectifies both the halves of the input AC signal
Which component of a circuit is used to measure current?
The number of diodes used to build a bridge rectifier
1
2
3
4
Efficiency of a centre tapped full wave rectifier is _________
a) 50%
b) 46%
c) 70%
d) 81.2%
50%
46%
70%
81.2%
The two legs of the diode are ________________ and _______________
(a)
Which image shows the output of a sine-wave after it has gone through a diode? (Half-wave rectified)
