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what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing
2623draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it
2678- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
2694Post New Electrical Engineering Questions
DEAR SIR,I GOT THE CALL LETTER FROM RRB, SECUNDERABD AS A JE-II SO PLEASE PROVIDE ME SOME MODEL QUESTION AND ANSWER PAPERS AND LAST YEAR QUESTION PAPERS
What is voltage ratio of a transformer?
What are the disadvantages of autotransformer?
sir i had plane to do some project with the base of hopkinson test in AC supply its possible
Why collecting electrode of ESP to be earthed
1.4 What is meant by CT knee point voltage and how would you determine it
HOW TO CALCULATE EARTHING SIZING?
why surge protectetor work explain with the help of circut diagram?
Define phase lag and phase lead?
electrical ques
A d.c. Shunt motor is found suitable to drive fans because they require?
DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.
In a flange coupling, the flange bolts are designed for
What is the formula to calculate the rating of a three phase air circuit breaker
what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?
