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Q1. | Which of the following is 'synchronous'? |

A. | Half adder [Wrong Answer] |

B. | Full adder [Wrong Answer] |

C. | R-S flip-flop [Wrong Answer] |

D. | Clocked R-S flip-flop [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ A 4 bit down counter can count from

0000 to 1111

1111 to 0000

000 to 111

111 to 000

⇒ The range of value "

*a*" for which system will be stable. If impulse response of DT system is =

*a*

*∪[*

^{n}*n*]

*a*> 1

*a*< 1

1 <

*a*< ∞

-1 <

*a*< 1

⇒

Match the following:

List I (Memories) | List II (Characteristic) | ||
---|---|---|---|

A. | Static PLA | 1. | erasable, programmable |

B. | CCD | 2. | ultra high speed |

C. | ECL | 3. | stores large volume of data |

D. | GAL | 4. | Does not need refreshing |

5. | Non-volatile |

A-4, B-3, C-2, D-1

A-4, B-2, C-3, D-1

A-5, B-1, C-2, D-3

A-3, B-5, C-2, D-1

⇒ Decimal 17 in octal system is represented by

888

111

21

27

⇒ In the circuit of figure for sinusoidal input the waveform of the output will be as show

figure A

figure B

figure C

figure D

⇒ Consider the following statements

- A 33 MHz 486 has higher MIPS than 33 MHz 386.
- A 33 MHz 486 has higher MFLOPS than 33 MHz 386 of these statements.

Both are true

Both are false

1 is true and 2 is false

1 is false and 2 is true

⇒ (1111.11)

_{2}is

(1.01)

_{10}

(0.75)

_{10}

(15.3)

_{10}

(15.75)

_{10}

⇒ Which of the following is best excited from a waveguide?

Discone

Helical

Biconical

Horn

⇒ A network N is dual of network N if

both of them have same mesh equation

both of them have same node equation

mesh equation of one are the node equations of the other

KCL and KVL equations are the same

⇒ For maximum transfer of power, internal resistance of the source should be

equal to load resistance

less than the load resistance

greater than the load resistance

none of the above

⇒ For the two ports in figure,

*y*

_{11}= 8 mho,

*y*

_{12}=

*y*

_{21}= -6 mho and

*y*

_{22}= 6 mho. The values of Y

_{A}, Y

_{B}, Y

_{C}respectively

2, 6, 6 mho

2, 6, 0 mho

2, 0, 6 mho

2, 6, 8 mho

⇒ A balun provides an impedance transformation of

0.667361111111111

0.334027777777778

0.167361111111111

0.0840277777777778

⇒ Let

*f*

_{1}(

*t*) = G

_{1}(

*t*) + 4,

*f*

_{2}(

*t*) = G

_{2}(

*t*) + 3. If G

_{1}(

*t*) and G

_{2}(

*t*) are uncorrected then the correlation between

*f*

_{1}(

*t*) and

*f*

_{2}(

*t*) are

12

7

6

zero

⇒ If the output current wave shape of class C circuit has a period of 1 μs and a pulse width of 0.006 μs, the duty cycle is

0.06

0.006

0.00006

0.0006

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | R_{T} | 1. | A = D |

B. | R_{h} | 2. | h_{12} = h_{21} |

C. | S_{T} | 3. | AD - BC = 1 |

D. | S_{h} | 4. | h_{21} = - h_{21} |

5. | B = C | ||

6. | Δh = 1 |

A-3, B-4, C-1, D-6

A-3, B-2, C-5, D-4

A-5, B-4, C-1, D-2

A-5, B-4, C-1, D-6

⇒ The control logic for a binary multiplier is specified by a states diagram. The state diagram has four states and two inputs. To implement it by the sequence register and decoder method.

two flip-flop & 2 x 4 decoder are needed

four flip-flop & 2 x 4 decoder are needed

two flip-flop & 3 x 9 decoder are needed

four flip-flop & 3 x 9 decoder are needed

⇒ Which of these has the highest dielectric strength?

Mica

Air

Cotton

Rubber

⇒ An RLC series circuit is underdamped. To make it overdamped, the value of R

has to be increased

has to be decreased

has to be increased to infinity

has to be reduced to zero

⇒ In a Weston synchronoscope the deflecting torque is zero when

currents in fixed and moving coils are in phase

currents in fixed and moving coils are out of phase by 90°

currents in fixed and moving coils are out of phase by 60°

none of the above

⇒ In a JK master slave flip flop

master is clocked when clock is low

slave is clocked when clock is high

master is clocked when clock is high and slave is clocked when clock is low

master is clocked when clock is low and slave is clocked when clock is high

⇒ Consider the following statements:

- Acceptor level is formed very close to the conduction band.
- The effective mass of the free electron is same as that of a hole.
- The magnitude of the charge of a free electron is same as that of a hole.
- Addition of donor impurities adds holes to the semiconductor.

1 and 3

2 and 3

2 and 4

3 and 4

⇒ A periodic voltage has following values for equal time intervals changing suddenly from one value to next : 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, - 5, - 10

31

*v*

32

*v*

insufficient data

none of these

⇒ Which of the following conversion is incorrect?

2048.0625 = 100000000000.0001

_{2}

100000011.1001

_{2}= 131.5625

_{10}

101101

_{2}= 45

_{8}

Hexadecimal B6C

_{7}= 46791

_{10}

⇒ Octal 16 is equal to decimal

13

14

15

16

⇒ In figure, the current

0.0416666666666667

0.0833333333333333

0.166666666666667

0.333333333333333

⇒ Consider isotropic radiator radiating a power of 1 watt. At a distance of 1 metre, the power per unit area with equal

1 watt/m

^{2}

4p watt/m

^{2}

1/4p watt/m

^{2}

2p watt/m

^{2}

⇒ The mass of an electron is nearly

9.1 x 10

^{-27}kg

9.1 x 10

^{-29}kg

9.1 x 10

^{-31}kg

9.1 x 10

^{-35}kg

⇒ A 750 A circuit uses thyristor of current rating 175 A. If derating is 25%, the number of thyristors in parallel is

3

4

6

10

⇒ The forbidden energy gap in semiconductors

is always zero

lies just below the valence band

lies between the valence band and the conduction band

lies just above the conduction band

⇒ A digital watch contains

quartz crystal oscillator

RC oscillator

LC oscillator

either quartz or RC oscillator