In the electronic laboratory, a diode rectifier tube has a plate resistance of \(600\) ohms (assumed constant) and is connected as a half-wave rectifier to a load resistance of \(1{,}400\) ohms. The energizing supply voltage is \(440\) volts effective, \(60\) Hz alternating current. Find the rms rectified current.
A0.162 A
B0.155 A
C0.208 A
D0.311 A
#22📜 EE Board April 1997📘 1001 RojasMedium
A resistor is connected across an AC supply of \(220\) volts. The power drawn is \(1{,}000\) watts. If a diode were connected in series with the resistor, what would be the power absorbed by the resistor?
A850 W
B250 W
C750 W
D500 W
#23📜 EE Board October 1996📘 1001 RojasEasy
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
#24📜 EE Board April 1997📘 1001 RojasMedium
A germanium diode, which has an offset voltage of \(0.2\) V and an incremental resistance of \(20\) ohms, is connected in series with a \(10{,}000\)-ohm resistor across a \(100\) V DC source. What is the current?
A9.98 mA
B10 mA
C9.78 mA
D9.96 mA
#25📜 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\(40/\pi\)
#26📜 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
#27📜 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
#28📜 EE Pre-Board August 2017📘 PowerhouseEasy
The maximum efficiency of a half-wave rectifier is
A40.6%
B81.2%
C50%
D100%
#29📜 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
