The harmonic contents in an inverter can be reduced through the use of modified PWM. 1- Voltage, 2- Full, 3- Reduced, 4- Commutation, 5- None of previous. g- In a single-phase full converter, for discontinuous load current and angle ß> π, each SCR conducts for 1- α, 2- ß-a, 3-B, 4- a+ß 5- None of previous. h- The output voltage of step-up chopper is E 4- 5- None of previous. ********* 1-1-0, 2-, 3- E E 2-1, 3-2-1,

The harmonic contents in an inverter can be reduced through the use of modified PWM. 1- Voltage, 2- Full, 3- Reduced, 4- Commutation, 5- None of previous. g- In a single-phase full converter, for discontinuous load current and angle ß> π, each SCR conducts for 1- α, 2- ß-a, 3-B, 4- a+ß 5- None of previous. h- The output voltage of step-up chopper is E 4- 5- None of previous. ********* 1-1-0, 2-, 3- E E 2-1, 3-2-1,

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.30P: Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and...

See similar textbooks

Similar questions

In an ideal step down (type-A) chopper the supply voltage is 250 V, chopping frequency = 300 Hz, duty cycle = 0.5, load resistance is 5 22 and load inductance is 5 mH. If the load has a back emf of 100 V, find the average output current of the chopper. Also find the maximum and minimum values of steady-state output current and the average value of source current.
When comparing values for shape factor: a. A value of 0.707 is ideal b. There is no ideal value c. A value of 1.414 dB is ideal d. A value of 1.0 is deal
A 500 MVA synchronous machine has H, = 5.6 MJ/MVA and a 1200 MVA machine has H₂ = 2.0 MJ/MVA. The two machines operate in parallel in a power station. What is the equivalent. H constant for the two, relative to a 100 MVA base?
In Chopper operation I0 is positive , the direction of power flow will be from ......... to .........
Derating means that the maximum power dissipation is reduced when temperature is reduced according to a derating factor. Select one: True False
1. Simulate the scenario shown in Figure 1.4 given in the above sections. Hint: continuous signals (40 & 90 Hz), sample both signals at 100 Hz. Result Should look exactly like: Amp Amp 0.5 00 -0.5 -1 0.5 0 -0.5 0 0.01 0.02 0.03 -1 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 time (sec) 0.04 0.05 0.06 0.07 0.08 0.09 0.1 time (sec) matlabcode
24. A step up chopper has load voltage of 600V and is sup- plied from a constant de source of 150V. If the OFF time of the chopper is 40 µs and desired output voltage is 300V find ON time of the chopper? (A) 5 µsec (C) 30 µsec (B) 10 μsec (D) 40 µsec
Two gen. A and B operate in parallel. The station capacity of A is 50MW and that of B is 25MW. The full load speed regulation of station A is 3% and of B is 3.5%. Find the load sharing of 50MW between both the machine and the no load frequency is 50Hz. Don't use pen and copy.
A single phase voltage controller of 220 V, 50 Hz and a load of 10 Q. For 9 cycles on and 7 cycles off the rms output voltage and input power factor are: (a) 170 V, 0.7 (b) 165 V, 0.75 (c) 171 V, 0.78 (d) 180 V, 0.6
Q2. Choose one only 1. Compare between load curve and duration load curve. 2. What do you understand by the load curve? What information's are conveyed by a load curve?
Low lagging power factor results in large voltage drop which results in poor.......... . (complete)
Realized a 4X1 multiplexer in the block diagram shown below. What is the output equation of the given multiplexer? Also draw the circuit diagram. N.B: Follow the instruction given in the figure to choose the input and output names. "First Letter of your Name"| 10 I1 | "Third Letter of your Name" 4X1 "Second Letter of your Name MUX 12 13 B