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Materials Science and Manufacturing Engineering Miscellaneous

Materials Science and Manufacturing Engineering

  1. A resistance-capacitance relaxation circuit is used in an electrical discharge machining process. The discharge voltage is 100 V. At a spark cycle time of 25 μs, the average power input required is 1 kW. The capacitance (in μF) in the circuit is
    1. 2.5
    2. 5.0
    3. 7.5
    4. 10.0
Correct Option: B

Power =
work
=
1
CV2
time2t

C =
2t × P
V2

=
2 × 25 × 10−6 × 1000
(100)2

Where :–
V = Voltage
t = time



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