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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The main cause of silting up a channel,

All of these
Inadequate slope
Defective head regulator
Non-regime section

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value and mean value is the same in the case of

Half wave rectified sine wave
Triangular wave
Sine wave
Square wave

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AC Fundamentals, Circuit and Circuit Theory
The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of

Iron loss in core
Skin effect
Capacitive effect between adjacent coil turns
Increase in temperature

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AC Fundamentals, Circuit and Circuit Theory
For a sine wave with peak value Imax the r.m.s. value is

0.707
0.5 Imax
1.414 Imax
0.9

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AC Fundamentals, Circuit and Circuit Theory
The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is

8 kVAR
16 kVAR
12 kVAR
10 kVAR

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AC Fundamentals, Circuit and Circuit Theory
When an alternating current passes through an ohmic resistance the electrical power converted into heat is

Apparent power
None of the listed here
Active power
Reactive power

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