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what is the difference between directional & non directional earth fault with example please explain.
1856How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors
19461,Building containing 25 flats how much Amp 3 pole MCCB are required? 2, For the safey of each flat how many Amp RCCB can install -loaded with A/C
L&T,
1 3109If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?
1453Post New Electrical Engineering Questions
For a stable system, where should the poles of a system be in a root loci plot?
what is the saturation point of crgo lamination.
. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?
What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?
what is the range of maximum DOL and SDS can be use for pump and fan application
in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}
what is resver in electrical enginnering with answer
Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?
DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER
What are the uses of stepper motor?
what is the maintaining Cf in UPS.
What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?
working principle of oil startar
what is tri state logic gate
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
