Answer Posted / anil rohilla
Since the pf of transformer is dependent on load
We only define VA rating and does not include pf.
Inspite this in motors pf depend on construction and hence
rating of motors is in KWatts and incude pf.
Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
How would you relate your key competencies to this position?
why Lightening Arrester Probe sharp at Top of telecom tower.
What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..
Explain what is use of lockout relay in ht voltage?
i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper
how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?
how to select energy meter? have any calculation?
What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation
What is formula calculation size cable wire ?
What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?
ratings of lightning arrester
briefly explain principle of resistance welding
in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)