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Electromagnetic Field Theory
The emf induced in a conductor rotating in bipolar field is
none of these.
DC and AC both.
AC.
DC.
none of these.
DC and AC both.
AC.
DC.
Answer
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Related Question
Electromagnetic Field Theory
What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m
4 mm.
2.4 mm.
8.4 mm.
10 mm.
4 mm.
2.4 mm.
8.4 mm.
10 mm.
Answer
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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as
Active satellite
Passive satellite
Orbiting satellite
Geostationary satellite
Active satellite
Passive satellite
Orbiting satellite
Geostationary satellite
Answer
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Electromagnetic Field Theory
A fan blade of length 2R rotates in a time period T in a magnetic field B. The induced voltage in the blade is proportional to
R2B / T.
2RBT.
RBT.
R2BT.
R2B / T.
2RBT.
RBT.
R2BT.
Answer
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Electromagnetic Field Theory
Magnetic circuit with cross sectional area of 20 cm2 is to be operated at 50 Hz from 120 Vrms supply. The number of turns required to active a peak magnetic flux density of 1.8 T in the core flux is
300.
450.
600.
150.
300.
450.
600.
150.
Answer
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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying
106 volts.
106 Amp.
106 Amp/sec.
106 volts/sec.
106 volts.
106 Amp.
106 Amp/sec.
106 volts/sec.
Answer
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