A motor works on 30 killo watts.how much ampers will be
required if it works on 440volts?
Answer Posted / gaurang
We Know the Power Equation
P=1.732*V*I*Cosphi
So As per Details
P=30 KW
V=440 Volts
Then,
I=30 KW/1.732*440*0.8
Wher Cos phi=0.8
I=49 A
| Is This Answer Correct ? | 5 Yes | 2 No |
Post New Answer View All Answers
What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?
What are the conditions to be satisfied for parallel operation of dc generators?
i want some interview related questions with their answers which can help for attend the interviews...
Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB
What's mean HVF & HAF in Vacuum Circuit Breaker?
Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.
What is a differential amplifier?
Explain the function and difference of Restricted earth fault, simple earth fault and sensitive earth fault with connection diagram.
how can tell us the AC indoor or outdoor which Tr and formulls
what is kvarh? Please define it With calculation General motors ?
If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these
Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.
I HAVE BEEN SELECTED FOR APGENCO A.E(ELECTRICAL) 2008.HOW MUCH WEIGHTAGE FOR INTERVIEW AND WRITTEN TEST.HOW I HAVE TO PREPARE. PLEASE GIVE INFORMATION IF U KNOW.WHAT ABT G.D THIS TIME.CALL RATIO 1:2
how to calculate the no load current in transformer?
how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.