1. An X-Y flip-flop, whose characteristic table is given below is to be implemented using a JK flip-flop. This can be done by making—
   
   
   

1. 1. J = X, K = Y

   
   
   

   2. J = X , K = Y

   
   
   

   3. J = Y, K = X

   
   
   

   4. J = Y , K = X

   
   
   

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1. View Hint View Answer Discuss in Forum

   From the given truth table we condude that

   
   

   Correct Option: D

   From the given truth table we condude that

   
   

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2. T flip-flop is used as—

1. 1. Transfer data circuit

   
   
   

   2. Toggle switch

   
   
   

   3. Time delay switch

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   T flip-flop is used as toggle switch.

   Correct Option: B

   T flip-flop is used as toggle switch.

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3. A 1µs pulse can be converted into a 1 ms pulse by using—
   

1. 1. A monostable multivibrator

   
   
   

   2. An astable multivibrator

   
   
   

   3. A bistable multivibrator

   
   
   

   4. JK flip-flops

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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4. D flip-flop is used as—

1. 1. Differentiator

   
   
   

   2. Divider circuit

   
   
   

   3. Delay switch

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   D flip-flop is used as time delay switch.

   Correct Option: C

   D flip-flop is used as time delay switch.

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5. Consider the following statements:
   1. A flip-flop is used to store 1-bit of information.
   2. Race-around condition occurs in a JK flip-flop when both the inputs are 1.
   3. Master-Slave configuration is used in flip-flops to store 2-bits of information.
   4. A transparent latch consists of a D-type flip-flop. Which of the above statements is/are correct?

1. 1. 1 only

   
   
   

   2. 1, 3 and 4

   
   
   

   3. 1, 2 and 4

   
   
   

   4. 2 and 3 only

   
   
   

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1. View Hint View Answer Discuss in Forum

   The following statements are correct
   ● A flip-flop is used to store 1 bit of information
   ● Race-around condition occurs in a JK flip-flop when both the inputs are 1
   ● A transparent latch consists of a D-type flip-flop

   Correct Option: C

   The following statements are correct
   ● A flip-flop is used to store 1 bit of information
   ● Race-around condition occurs in a JK flip-flop when both the inputs are 1
   ● A transparent latch consists of a D-type flip-flop

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