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Chapter 16 - Alternating Current - 6
1.
The combined effect of resistance and reactance is called
a) reactance
b) resistance
c) Impedance
2.
Impedance of R-L circuit
a) √+(ωL)
b) √+(ωL)3
c) √+(ωL)2
3.
Impedance of R-C circuit
a) √+(1/ωc)2
b) √+(1/ωc)-2
c) √+(1/ωc)
4.
Power dissiplated across Ac circuit is
a) C/2πf
b) C/2f
c) C/3πf
5.
Condiction of a resonance frequency in an R-L-C circuit
a) Three separate coils
b) Four separate coils
c) Two separate coils
6.
Metal detector can be made from an alternating
a) 8 MHZ to 10 MHZ
b) 88 MHZ to 108 MHZ
c) 98 MHZ to 120 MHZ
7.
Three phase Ac generator has
a) 5400 KHZ to 16000KHZ
b) 54 KHZ to 160KHZ
c) 540 KHZ to 1600KHZ
8.
An FM frequency transmission ranges from
a) IV Cos θ
b) IV Sin θ
c) IV Tan θ
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