A Best Way To Crack Gorenment Job Exams

Technical Mcqs Objective Questions {  Inductors }



36. A turns ratio of 5 for a transformer implies:
A. more primary turns than secondary turns
B. more secondary current than primary current
C. larger source impedance than load impedance
D. more secondary turns than primary turns
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37. A practical inductor
A. has inductance
B. has winding resistance
C. has winding capacitance
D. all of the above
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38. When current in an inductor starts to change, it cannot react instantly due to:
A. fixed coil resistance
B. eddy current generation
C. applied emf of the circuit
D. the counter emf of the coil
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39. What is the approximate time for a complete decay of 400 mA of inductor current, when R = 10 ohms and L = 20 H?
A. 10 seconds
B. 8 seconds
C. 4 seconds
D. 2 seconds
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40. A utility pole transformer used to supply a residential customer with two phases uses:
A. two phases on the primary
B. a center tap on the secondary
C. a separate ground for each phase
D. a small coefficient of coupling
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41. When a coil collapses the induced circuit current will:
A. be in the same direction
B. go to zero
C. aid counter emf buildup
D. be in the opposite direction
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42. When a rate of one ampere per second causes an induced voltage of one volt, the unit of measure is
A. a lenz
B. an ohm
C. a farad
D. a henry
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