1. The race around condition exists in JK flip-flop if—

1. 1. J = 0; K = 0

   
   
   

   2. J = 1; K = 0

   
   
   

   3. J = 0; K = 1

   
   
   

   4. J = 1; K = 1

   
   
   

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1. View Hint View Answer Discuss in Forum

   The race around condition exists in JK flip-flop it J = 1, K = 1.

   Correct Option: D

   The race around condition exists in JK flip-flop it J = 1, K = 1.

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2. Bistable multivibrator is also known as—

1. 1. Binary

   
   
   

   2. Flip-flop

   
   
   

   3. Eceless Jordan circuit

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Bistable multivibrator is also known as
   ● Binary
   ● flip-flop
   ● Eceless Jordan circuit

   Correct Option: D

   Bistable multivibrator is also known as
   ● Binary
   ● flip-flop
   ● Eceless Jordan circuit

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3. In T flip-flop the output frequency is—

1. 1. Same as the input frequency

   
   
   

   2. Double of its input frequency

   
   
   

   3. One-half its input frequency

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   In T flip-flop the output frequency is one half its input frequency.

   Correct Option: B

   In T flip-flop the output frequency is one half its input frequency.

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4. Astable multivibrator is also known as—

1. 1. One shot multivibrator

   
   
   

   2. Schmidt trigger

   
   
   

   3. Free running multivibrator

   
   
   

   4. Gating circuit

   
   
   

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1. View Hint View Answer Discuss in Forum

   Astable multivibrator is also known as free running multivibrator.

   Correct Option: C

   Astable multivibrator is also known as free running multivibrator.

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5. In a JK flip-flop the output Qn is '1'. It does not change when a clock pulse is applied. The possible combination of Jn and Kn could be (X denotes don't care)—

1. 1. 'X' and '0'

   
   
   

   2. 'X' and '1'

   
   
   

   3. '0' and 'X'

   
   
   

   4. 'Y' and 'X'

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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