what is the frequency of direct current(dc)?
Answer Posted / p sateesh
dc power is unidirectional in nature irrespective of timeperiod bcz of there z no alternation as well as f is inverse propotion of time period
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
Which motor connection is preferable star-delta or delta-star?
What is the difference between a 3 winding and 2 winding Potential Transformer
How maesure earth neutral value & how much maximum value value required in between earth & neutral.
What is a surge supressor why its is used in synchronous generators
all interview questions with answers of ntpc (2000-2009
How to calculate the current of Highpressure Mercury Vapour Lamp?what is the basis?whether we have to consider power factor or not?
why 1.7Uo for HV cable Hi pot test?IE standard why?
How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?
for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....
how does ELR works? explain
what is the importance of earthing system on the generators big capacity and small?
- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
What is VCB? where it is installed at SP. What is SP?
what are the 4 rules to start the motor?