Computer Programming MCQs

5739 MCQs  (Page 10 of 574)

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Sparking occurs when a load is switched off because the circuit has high_________?
A. Resistance
B. Inductance
C. Capacitance
D. Impedance
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Copper wire of certain length and resistance is drawn out to three times its length without change in volume, the new resistance of wire becomes__________?
A. 1/9 times
B. 3 times
C. 9 times
D. Unchanged
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When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?
A. Decrease
B. Increase
C. Remain constant
D. None of the above
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A field of force can exist only between_____________?
A. Two molecules
B. Two ions
C. Two atoms
D. Two metal particles
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A substance whose molecules consist of dissimilar atoms is called____________?
A. Semi-conductor
B. Super-conducto
C. Compound
D. Insulator
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International ohm is defined in terms of the resistance of________________?
A. A column of mercury
B. A cube of carbon
C. A cube of copper
D. The unit length of wire
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Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be_________________?
A. 9 times
B. 1/9 times
C. 1/3 times
D. 3 times
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Three 6 ohm resistors are connected to form a triangle. What is the resistance between any two corners ___________?
A. 3/2 q
B. 6 q
C. 4 q
D. 8/3 q
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Ohm’s law is not applicable to__________?
A. Semi-conductors
B. D. c. circuits
C. Small resistors
D. High currents
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Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other. If the conductor having smaller cross-sectional area has a resistance of 40 ohms the resistance of other conductor will be_____________?
A. 160 ohms
B. 80 ohms
C. 20 ohms
D. 10 ohms
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Word of the Day
10 Jul
Spur
a thing that prompts or encourages someone; an incentive.
اکسانے والی بات، آر،مہمیز

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