In a single phase energy meter, the shunt electromagnet is energized by a ____of ____

In single phase energy meter,
Current coil is made up from thick wire having few no. of turns.
Pressure coil is made up from thin wire having more no. of turns.

A delta-connected balanced three-phase load is supplied from a three-phase, 400 V supply. The line current is 20 A and the power taken by the load is 10 kW. Find the power factor.

P = 10 kW
VL = 400 V
IL = 20 A

3- phse power, P = √3*VL*IL*cosφ

cosφ = 10*1000/(√3*400*20)
= 0.7216

A THHN conductor will have a 60˚C termination on one end and a 75˚C termination on the other, which ampacity column will be used?

Conductor with higher temperature ratings, provide the ampacity is determined based on the 60°C ampacity of the conductor.

સ્વાધીન' નો વિરોધીભાસી શબ્દ કયો છે?

A three-phase 400 V, 6-pole, 50 Hz squirrel-cage induction motor is running at a slip of 5%. The speed of rotor with respect to stator magnetic field and speed of the stator magnetic field with respect to rotor magnetic field are

Slip, s = (Ns - Nr)/Ns
Ns = 120f/P
0.05 = (1000 - Nr)/1000
Nr = 950 rpm
Speed of rotor with respect to stator magnetic field = 950 - 1000 = -50 rpm

Speed of the stator magnetic field with respect to stator core = 0
Speed of the rotor magnetic field with respect to rotor = sNs
Speed of the stator magnetic field with respect to rotor magnetic field = 0
Speed of the rotor magnetic field with respect to stator core = Ns

Nangal Wildlife Sanctuary is located in which state?