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Digital Electronics

Digital Electronics
What is the gray code for the binary 101011?

 111110
 011111
 101011
 110101

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Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

2n
2n-1
2n
22n

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Digital Electronics
The output of a NAND gate is low

 only when at least one input is high
 only when all the inputs are high
 only when at least one input is low
 only when all the inputs are low

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Digital Electronics
An X-OR gate gives a high output

 for odd decimal value.
 if it has even number of 0s
 if the decimal value of digital word is even
 if there are odd number of 1s

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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 30°.
 Inclined at 60°.
  Parallel.

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Digital Electronics
An EPROM

 is programmable
All of these
 is non volatile
 is of random-access type

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MORE MCQ ON Digital Electronics

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