why is neccessary Tap changing of power transformer with in a
certain time
Tap changing is to change the ratio of the input voltage to
the output voltage. This changes the output voltage.
When the load on a power line changes the voltage changes
as well because of a reduced or increased line losses.
The tap changing means the output voltage can be controlled
to be as close to the desired voltage. Otherwise serious
high or low voltage could be experienced.
Is This Answer Correct ? | 1 Yes | 0 No |
What is the working principle of servo motor? And explain it.
ARE YOU NOURVAS ?
Define gain margin?
1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?
-----------means a source which can supply a constant voltage to aload irrespective of the valu of load resistance.
I have a 5KVA UPS. Total load to be connected almost 3KW. Ordering a battery pack with capacity of 1920VAh. How long will the backup time be?
Why use prefer Dc drive in place of Ac drive for kiln Operatio in Cement Plant?
how are reversing the direction of rotation of dc motor
if we put a energy meter in 500 kvar capacitor bank ,then how much units show in energy meter per day.
Any Electrical Engineering jobs?Please refer for interviews. Thank you
defination of controlled shunt reactor
describe the constructional features of an auto transformer and its principle operation