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Q1. | A flip-flop circuit is |

A. | monostable [Wrong Answer] |

B. | bistable [Correct Answer] |

C. | multistable [Wrong Answer] |

D. | unstable [Wrong Answer] |

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

⇒ If a driving point function N(

*s*) =

*p*(

*s*)/

*q*(

*s*), then

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ in degree by zero only

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ by one at the most

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ in degree by two at the most

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ in degree by three at the most

⇒

Match the following:

List I (Signal) | List II (Value) | ||
---|---|---|---|

A. | AM | 1. | 0 0.5 |

B. | DSB - SC | 2. | 1 |

C. | SSB | 3. | 2 |

D. | FM (β = 2) | 4. | 16 |

E. | FM (β = 5) | 5. | 8 |

A-1, B-3, C-2, D-5, E-4

A-3, B-3, C-1, D-5, E-4

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

A-4, B-2, C-5, D-3, E-1

⇒ The sum S of A and B in a Half Adder can be implemented by using K NAND gates. The value of K is

3

4

5

none of these

⇒ The satellites used for intercontinental communication are called

Comsat

Domsat

Marisat

Intelsat

⇒ If X = - 285.56 and the Pascal write statement used is

`WRITE (X : 8).`

Then the print out will appear as-285.56

-2.85 E + 02

-2.85560 E + 02

-2.8 E + 02

⇒ Hysteresis loss in a transformer working at 220 V and at a frequency of 50 Hz is 100 W. When the transformer is operated at 220 V and at a frequency of 100 Hz, what is the hysteresis loss?

50 W

100 W

200 W

400 W

⇒ The statement that the line integral of magnetic field about any closed path is exactly equal to the direct current enclosed by that path, is known as

Ampere's circuital law

Coulomb's law

Electrostatic's theory

None of the above

⇒ FM broadcast lies in which band?

HF

SHF

UHF

VHF

⇒ In an R-L-C circuit,

*v*(

*t*) = 20 sin (314

*t*+ 5 p/6) and

*i*(

*t*) = 10 sin (314

*t*+ 2p/3). The p.f of the circuit is

0.5 lead

0.866 lag

0.866 lead

0.5 lead

⇒ A separately excited dc motor is run from a dc source through a chopper. At 600 rpm and rated torque, the duty cycle of chopper is 0.8. At 600 rpm and half the rated torque, the duty cycle is likely to be

0.9

0.8

0.75

0.6

⇒ In the above case the modulation index will be

9.6

28.8

57.6

100

⇒ Which device changes parallel data to serial data?

Decoder

Multiplexer

Demultiplexer

Flip flop

⇒

**Assertion (A):** Thermocouple instruments can be used for ac only.

**Reason (R):** Thermocouple instrument has a non linear scale.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not correct explanation of A

A is true R is false

A is false R is true

⇒ If interrupt service request have been received from all of the following interrupts, then which one will be serviced last?

RST 5.5

RST 6.5

RST 7.5

None of these

⇒ The impulse response

*h*(

*t*) of a linear invariant continuous time system is given by h(

*t*) = exp (- 2

*t*)

*u*(

*t*), where

*u*(

*t*) denotes the unit step function. The output of this system to the sinusoidal input

*x*(

*t*) = 2cos(2

*t*) for all time

*t*, is

0

2

^{-0.25}cos (2

*t*- 0.125p)

2

^{-0.5}cos (2

*t*- 0.125p)

2

^{-0.5}cos (2

*t*- 0.25p)

⇒ In a perfect conductor the resistor noise is

maximum

zero

very high

almost infinite

⇒ Two sinusoidal signals of equal amplitude and frequency are applied to X and Y plate of CRO respectively. The observed Lissajous pattern is a straight line. The phase shift between signals is

zero

90°

either zero or 180°

either 90° or 270°

⇒ The kinetic energy of free electrons in a metal is (where

*k*is the de-Broglie wave number of the electron)

inversely proportional to

*k*

inversely proportional to square of

*k*

proportional to

*k*

proportional to the square of

*k*

⇒ The conduction band is

same as forbidden energy gap

generally located on the top of the crystal

generally located on the bottom of the crystal

a range of energies corresponding to the energies of the free electrons

⇒ A ripple counter has propagation delay.

TRUE

FALSE

⇒ In the full adder, denoting Sum by S and carry by C

S = 1 when two or more inputs are unity

C = 1 when two or more inputs are unity

C = 1 when all the inputs are unity

S = 1 when all the inputs are unity

⇒ Slotted line can be used for measurement of high frequencies

TRUE

FALSE

⇒ Binary multiplication can be done by repeated addition.

TRUE

FALSE

⇒ As regards single phase dual converter

the change in operation from one quadrant to the other is faster in non-circulating current mode

the change in operation from one quadrant to the other is faster in circulating current mode

the time response to change in operation from one quadrant to other is the same in both the modes

the time response to change in operation from one quadrant to the other may be faster in any of the two modes

⇒ In a voltage regulated power supply the zener operates in the breakdown region when (V

_{in}is input voltage and V

_{z}is zener breakdown voltage)

V

_{in}< V

_{z}

V

_{in}> V

_{z}

V

_{in}= V

_{z}

both (a) or (b)

⇒ If

*q*is charge on an electron, R is radius of electron orbit and ω is angular velocity of electron rotation, the magnetic dipole moment of electron in orbit is

0.5

*q*ωR

0.5

*q*

^{2}ω

^{2}R

^{2}

0.5

*q*ωR

^{2}

0.5

*q*ω

^{2}R

⇒ Gain stability in an oscillator can bs achieved by

providing negative feedback

providing positive feedback

using low Q circuits

controlling the gain

⇒ The characteristic equation of flip-flop gives the next state Q

_{N + 1}in terms of present state Q

_{N}and the inputs. Which one of the following is the characteristic equation of J - K flip-flop?

Q

_{N+1}= JQ

_{N}+ KQ

_{N}

Q

_{N+1}= J + KQ

_{N}

Q

_{N+1}= KQ

_{N}+ JQ

_{N}

Q

_{N+1}= K + JQ

_{N}

⇒ The effect of current shunt feedback in an amplifier is to

increase the I/P resistance and decrease the O/P resistance

increase both I/P and O/P resistance

decrease both I/P and O/P resistance

decrease the I/P resistance and increase O/P resistance

⇒ To evaluate X = (A + B + 1.2) * (A + B - C) the sequence of operation is

+ + + - * =

* + + + - =

+ + - * + =

- + + + * =