how can 3phase motor speed can be controlled without vvf drive?1 3872
improve power factor by : 1)shunt reactor 2)shunt capacitor 3)series capacitor 4)series reactor2 4075
where does core based current transformer is used? and what is the value of lux in a work station?1 2789
Does the Impedance of the source affects the THD1 2167
i have 60Hz motor, can i run it at 50Hz power supply ???2 3645
what is difference between ac1 and ac3 contactor and why it is needed to be selected?1 14267
How can we define 'Phase'4 3740
what is accuracy ? in any meters , coils accuracy . how can u defined that ?1527
power formula1 2425
what mean by power factor2 3247
why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%
why the voltage and current in a long transmission line are called travelling wave?
how to calculate the battery AH
what is meant by surge? what we called for high currents?
please send privious years question papers of jindal steel and power ltd.My e mail id is firstname.lastname@example.org
What is meant by bus bar protection?
if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .
How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.
How much earthing frequency is capable?
How RTCC panel is working and give single line diagram for RTCC with transformer?
what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated
what is deffrence between squirral cage and wound rotor in IM?
A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03
explain the what is a drive ? 0 4 which type motor r use in the celling fan..... PCB plannet 2 13 If stator & rotor of a 3-phase induction motor have different no. of poles, will the motor run or not?? types of drives Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only. ACC 1 41 how the 3phase induction motor is running in 2phase supply with help of capacitor? 1 33 what is the actual difference betwen constructional details and constructional features? 1 20 how does commutator convert a.c to d.c?
what is the effect of un-synchronized power.