when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
2009when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
4 23085can any one tell me the formula to select the thickness of wire selection according to ampere rating
2 3853I want to know the currect formula for industrial lighting lux caluculation & light fittings selection
MRF,
2 6951why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?
1522A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?
L&T,
4563If a motor of 30KW rating &200 mtrs distance from feeder give me the cable size selection calculation?
1410Post New Electrical Engineering Questions
Ceiling Fan and Storage type water heater. Discuss
how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)
is there any chart showing the suitable cable size according to AMP and length ? for three phase motors
Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.
The power supplied to a 50mH inductor from a 120V, 60Hz source will be
What mean by MLTP
What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?
From past few months I am getting lagging pf even though sufficient capacitors used in circuit. Where is the problem pls answer
how to wiring it with contactor and timer together
What safety precaution are to be taken for avoiding electric hazards ?
what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?
State Maximum Power Transfer theorem.
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
Write the current equation in series RLC circuits.
what is electrical machines
