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Digital Electronics

Digital Electronics
Which of the following operations is commutative but not associative?

 OR
 X-OR
 NAND
 AND

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Digital Electronics
X OR X' will result

 X
 0
 X'
 1

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Digital Electronics
The 1’s complement of 11010111 is

 11101000
 10101000
 00101000
 10101000

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

 1 V.
  1 mV.
 1.1 V.
 0.01 V.

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Digital Electronics
The effect of stray magnetic field on the actuating torque of a portable instrument is maximum when the operating field of the instrument and the stray fields are

 Perpendicular.
 Inclined at 60°.
 Inclined at 30°.
  Parallel.

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Digital Electronics
In LSI, the number of gate circuits per chip is

 100 to 9,999
 1000 to 10,000
 < 10,000
 100 to 999

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