Computer Programming MCQs

5739 MCQs  (Page 246 of 574)

Attempt Computer Programming MCQs Quiz
Which of the following materials is preferred for transmitting electrical energy over long distance ?
A. Copper
B. Aluminium
C. Steel reinforced copper
D. Steel reinforced aluminium
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Superconductors are becoming popular for use in________________?
A. Generating very strong magnetic field
B. Manufacture of bubble memories
C. Generating electrostatic field
D. Generating regions free from magnetic field
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The superconductivity is due to____________?
A. The crystal structure having no atomic vibration at 0°k
B. All electrons interact in the super-conducting state
C. The electrons jump into nucleus at 0°k
D. None of the above
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The conductivity of a conductor can be increased by_______________?
A. Decreasing its temperature
B. Increasing its temperature
C. Decreasing its vibration
D. Increasing its vibration
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In a superconductor the value of critical density depends upon______________?
A. Magnetic field strength
B. Temperature
C. Either (a) or (b)
D. Both (a) and (b)
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High resistivity materials are used in_____________?
A. precision instruments
B. heating elements
C. motor starters
D. incandescent lamps
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highest conductivity_____________?
A. B. lowest temperature co-efficient
B. C. good mechanical strength
C. D. good corrosion resistance
D. E. easy solderable and drawable quality
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Superconductivity is observed for____________?
A. Infrared frequencies
B. D.c. and low frequency
C. A.c. and high frequency
D. Frequencies having no effect
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The value of critical field below the transition temperature will_______________?
A. Increase
B. Decrease
C. Remain unchanged
D. Any of the above
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On which of the following factors does the resistivity of a material depend ?
A. Resistance of the conductor
B. Area of the conductor section
C. Length of the conductor
D. All of the above
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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