A circuit consists of a resistor that is connected in series with a perfect diode. When connected across a \(20\)-V battery the current measured is \(10\) A. However, when connected across a \(30\)-V battery but with reversed polarity, what would be the new current?
A15 A
BZero current
C20 A
DNone of the answered listed
#2📜 EE Pre-Board August 2012📘 PowerhouseEasy
The rms value of a half wave rectified current is 10 A. Its value for full wave rectification would be _ amperes.
A20
B14.14
C\(20/\pi\)
D\(40/\pi\)
#3📜 EE Pre-Board March 2016📘 PowerhouseEasy
In full-wave rectification, if the input frequency is 60 Hz, then the output has a frequency of ______
A120 Hz
B60 Hz
C30 Hz
D15 Hz
#4📜 EE Pre-Board March 2017📘 PowerhouseEasy
Calculate for the dc voltage when the converter consumes 1.5 kW of power at a source voltage of 230 v ac.
A253 v
B352 v
C235 v
D325 v
#5📜 EE Pre-Board August 2017📘 PowerhouseEasy
The maximum efficiency of a half-wave rectifier is
A40.6%
B81.2%
C50%
D100%
#6📜 EE Pre-Board August 2017📘 PowerhouseEasy
If a half-wave rectifier is used on 117 V rms ac (house mains), the average dc output voltage is about
