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1131 questions found
A transformer has 500 turns on the primary and 100 turns on the secondary. The secondary supplies 20V and is connected to a 10 ohm load. The primary current is
- 2 amps.
- 0.4 amps.
- 10 amps.
ravi_u5 asking:
HOW????
A Transformer has 4500 secondary turns and 750 primary turns. Its turns ratio is
- 6:1.
- 1/6.
- 1:6.
ravi_u5 asking:
Turn Ratio is Secondary/primary. Hence correct turn ratio is 6:1.
The instantaneous value of the EMF induced in a rotating wire loop is
- directly proportional to the sine of the angle between the loop and the field.
- indirectly proportional to the sine of the angle between the loop and the field.
- directly proportional to the cosine of the angle between the loop and the field.
yourguess31 asking:
how do you get cosine?
The RMS value of 200 volts peak to peak is
- 127.4 volts.
- 70.7 volts.
- 141.4 volts.
ssdr1999 asking:
Pls explain
An atom with 5 electrons in its outer shell is part of
- a C type material.
- a P type material.
- an N type material.
ssdr1999 asking:
please explain