what is the advantages of having in-built acvvvf (without
seperate inverter in the control panel)in the drive system
of elevators?
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Determine a suitable number of slors and conductors per slot for the starter 1 winding of a 3 phase, 3300 V. SO Hz 300 rpm alternator. The diameter is 2.3 m
sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.
1. what is the power factor of a purely inductive load? (i) Zero (ii) Lagging (iii)Leading (iv) Unity 2. which type of transformer connection is preferred in case of power supply transformer? (i) Star/Star (ii) Delta/Delta (iii) Star/Delta (iv) Zig Zag/Star
i want to put single phase load on scott connected transformer,eventhough how to balance the transformer.
Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.
Different types of relay fault which phase sequence??
What is the difference between IS:1554 (Part 1)/1988 & IS:694/1990 ? What do these two standards specify about?
What do you mean by Transformer?
9 Answers Hyundai, NTPC, wbsedcl,
why we are not earthing ht cable at both the ends(sending & receiving end)?
A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
Current Transformer's star point must face the protected object for the relay operation?
What range of speed can you get with the field control method of speed control of d.c. Shunt motor?