Font size
WorksheetsDiodes and rectifiers
Total questions: 10
Worksheet time: 6mins
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 image shows the output of a sine-wave after it has gone through a diode? (Half-wave rectified)
Which component of a circuit is used to measure current?
The function of rectifier is
To increase or decrease the AC voltage in a circuit
Converting the AC voltage into pulse DC voltage
Smooth out the ripple contained in the pulses of pulse DC voltage
Maintain a constant DC voltage output across a load
The number of diodes used to build a bridge rectifier
1
2
3
4
The applied input a.c. power to a half-wave rectifier is 100 watts. The d.c. output power obtained is 40 watts. What is the rectification efficiency ?
40%
60%
80%
90%
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)
The voltage found in the depletion zone of a diode is...
(a)
