What is the allowalable frequency variation in India and in
US?
Why there is the difference?
Answer Posted / abhishek
+- 0.5 hz
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is VCB? where it is installed at SP. What is SP?
why only exciting current is shown not primary current in transformer???
is that any software calculator to calculate the size of cable
The height to which the liquid in a tank to be maintained for a certain constant velocity?
what is the main parts of transformer? how it is functioning? pls giv the ans briefly.
what is circuit breaker in transfomer and where it used
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
BSNL TTA EXAM QUESTION
what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?
How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?
What will happen if the voltage in my house drops from 220V to any lower voltage?
What is transmittance?
How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
what are the specifications we must look at to select a relay for any capacity motor?
How to decide DO set rating of Transformer?