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Digital Electronics

Digital Electronics
A bubbled NOR gate is equivalent to a

 NOR gate
 AND gate
 X-OR gate
 NAND gate

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Digital Electronics
Which of the following is a digital device

 Light switch
 Regulator of a fan
 Microphone
 Resistance of a material

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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

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

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Digital Electronics
Which of the following gates cannot be used as an inverter?

 X-NOR
 AND
 NAND
 NOR

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Digital Electronics
The Quine– McClusky method of minimization of a logic expression is a (i) graphical method (ii) algebraic method (iii) tabular method (iv) a computer-oriented algorithm The correct answers are

 (i) and (ii)
 (iii) and (iv)
 (i) and (iii)
 (ii) and (iv)

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Digital Electronics
Each term in the standard SOP form is called a

 minterm
 literal
 don’t care
 maxterm

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