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WorksheetsDC Power Supply
Total questions: 10
Worksheet time: 6mins
In a power supply diagram, which block indicates a smooth dc output?
transformer
filter
rectifier
regulator
If a 169.7 V half-wave peak has an average voltage of 54 V, what is the average of two full-wave peaks?
119.9 V
108.0 V
115.7 V
339.4 V
A filtered full-wave rectifier voltage has a smaller ripple than does a half-wave rectifier voltage for the same load resistance and capacitor values because:
there is a shorter time between peaks
there is a longer time between peaks
the larger the ripple, the better the filtering action
none of the above
What is the current through the diode?
1 mA
0.975 mA
0.942 mA
0.0 mA
Shunting the ac component away from the load is the task of a:
transformer
filter
regulator
rectifier
With full-wave rectification, current through the load resistor must be:
in opposite directions
to the external load
from the reverse biased diode
in the same direction
What is the peak output voltage for this half-wave rectifier?
1 V
7.8 V
10.9 V
11.3 V
Providing a constant output regardless of ac input or load resistance changes is the function of a:
transformer
filter
regulator
rectifier
DC power should be connected to forward bias a diode as follows:
– anode, + cathode
– cathode, – anode
+ anode, – cathode
+ cathode, + anode
In a power supply diagram, which block indicates a pulsating dc output?
transformer
filter
rectifier
regulator
