Time Left - 30:00 mins
Week e
Attempt now to get your rank among 29 students!
Question 1
A 1- Φ diode Bridge rectifier is required to supply a dc output voltage of 120 V to a load resistance R = 6Ω. Determine the transformer rating required for this configuration in KVA?
Question 2
A single-phase full bridge diode rectifier is supplied form 230 V, 50 Hz. The load have R = 10 Ω and a large inductance so as to render the load current constant. Then determine the rms value of diode current?
Question 3
A 120V, 50Hz ac voltage is applied to the primary of 5:1 step up transformer whose secondary is centre tapped allowing a load of 1KΩ to be connected for a full wave rectification using two diodes. The lowest value of ripple frequency in Hz ?
Question 4
What is the purpose of using the free-wheeling diode in power converters?
Question 5
A dual ac-dc converter operates in which of the following quadrant
Question 6
Determine the ripple factor for a full wave bridge rectifier, assuming ideal diodes and purely resistive load.
Question 7
Consider the rectifier circuit shown below. The supply have 230V, 50Hz, and the load resistance having the value of R = 10Ω than find the RMS value of current flows through diode D1?
Question 8
In a single-phase full wave diode bridge rectifier the diodes have a reverse recovery time of 40 μs. For an AC input voltage of 230 V, Determine the reduction in average output voltage due to reverse recovery time for a supply frequency of 2.5 KHz?
Question 9
In the single-phase diode bridge rectifier shown in figure, the load resistor is R = 50 Ω. The source voltage is V = 200 sin(ωt), where ω = 2π × 50 rad/sec. The power dissipated in the load resistor R is
Question 10
Analysis of voltage waveform of a single-phase bridge converter shows that it contains x % of 6th harmonic. The 6th harmonic content of the voltage harmonic content of the voltage waveform of a 3-phase bridge converter would be
- 29 attempts
- 0 upvotes
- 0 comments
Jun 23ESE & GATE EE