4.18 of Problem 4.15 has a secondary voltage of 230 V and the load on the transformer is 100 kVA. By using the approximate equivalent circuit of a transformer, determine the voltage that must be applied to the primary terminals if The power factor of the load is 0.8 lagging b. The power factor of the load is 0.8 leading

4.18 of Problem 4.15 has a secondary voltage of 230 V and the load on the transformer is 100 kVA. By using the approximate equivalent circuit of a transformer, determine the voltage that must be applied to the primary terminals if The power factor of the load is 0.8 lagging b. The power factor of the load is 0.8 leading

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 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

See similar textbooks

Similar questions

For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) No
4.
The efficiency of a transformer at load 0.8 p.f. Lag is -- at load 0.8 p.f. Lead * equal less than more than none of these
Solv
The amount of inrush current in the primary of a transformer is limited by the........, A- amount of applied voltage, B- resistance of the wire in the primary winding, C- flux change of the magnetic field in the core, D - all of the above What precaution must be observed when working whit current transformers? A- never have a load on the secondary, B- always ha a load on the secondary, C- de-energize the primary whenever there is a load on the secondary, D - none The fact that the movable coil of a constant-current transformer moves further away from the stationary coil with a increase in load current is based on which fundamental priciple of magnetism? A- like magnetic poles attract, B- like magnetic poles repel, C- the amount of current flowing through a coil inverdely proportional to its flux density. D- none
A voltage transformer in Figure 8 has 1,500 turns of wire on its primary winding and 500 turns of wire for its secondary winding. What will be the turns ratio, a of the transformer. If 240 volts is applied to the primary winding, what will be the resulting secondary voltage. And if a 400 n resistor is connected to the secondary winding, what are the values of current Is and Ip. primary Vp Transformer Core NF Ns Figure 8 secondary Vs
A single-phase, 240 kVA, 240/4800 V transformer has the parameters shown in Figure Q5. Determine I and V at the primary and secondary when transformer is operating at full load kVA, 0.8 power factor leading and 220 V at the primary side. Find the voltage regulation. Use actual values and per unit system. 0.002625 Q 0.009 0 1.05 Ω 3.6 Ω V2 40 0 30 Q Figure Q5
Which of the following is the correct equation for calculating the rated current for a single-phase transformer? A. I=va/e b.I=sc/e c.a/e d.e×z/e
primary of a certain transformer takes 1 a at a power factor of 0.4 when it is connected acrossa 200-v, 50-hz supply and the secondary is on open circuit. the number of turns on the primary istwice that on the secondary. a load taking 50 a at a lagging power factor of 0.8 is now connectedacross the secondary. what is now the value of primary current ?
Please ? help o have no knowledge in this field With explanations Part c, d and e please only please
i need the answer quickly