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
Which of the following notations have two representations of zero? (I) 1’s complement with radix of number being 2 (II) 7’s complement with radix of number being 8 (III) 9’s complement with radix of number being 10 (IV) 10’s complement with radix of number being 10 Select the correct answer using the codes given below:

 (I) & (III)
 (I), (II) & (IV)
 (II), (III) & (IV)
 (I), (II) & (III)

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Digital Electronics
In case of OR gate, no matter what the number of inputs, a

0 at any input causes the output to be at logic 1.
0 any input causes the output to be at logic 0
1 at any input causes the output to be at logic 1
1 at any input causes the output to be at logic 0

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