Computer Programming MCQs

5739 MCQs  (Page 178 of 574)

Attempt Computer Programming MCQs Quiz
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?
A. 3500 mh
B. 350 mh
C. 250 mh
D. 150 mh
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Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is___________?
A. 5 mh
B. 10 mh
C. 5 h
D. 10 h
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The co-efficient of coupling between two air core coils depends on____________?
A. Self-inductance of two coils only
B. Mutual inductance between two coils only
C. Mutual inductance and self inductance of two coils
D. None of the above
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A crack in the magnetic path of an inductor will result in________________?
A. Unchanged inductance
B. Increased inductance
C. Zero inductance
D. Reduced inductance
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A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by________________?
A. Variation in coil current
B. Variation in voltage to the coil
C. Change of number of turns of coil
D. The resistance of magnetic path
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Which circuit element(s) will oppose the change in circuit current ?
A. Resistance only
B. Inductance only
C. Capacitance only
D. Inductance and capacitance
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The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns
A. Yes
B. No
D. None of these
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Reversing the field or the current will reverse the force on the conductor
A. Yes
B. No
D. None of these
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The polarity of the induced voltage can be determined by using the left-hand generator rule
A. Yes
B. No
D. None of these
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The ignited or auxiliary anode in mercury arc rectifier is made of____________?
A. Graphite
B. Boron carbide
C. Aluminium
D. Copper
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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