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Q1. | In a digital circuit, a clock is a |

A. | crystal type [Wrong Answer] |

B. | multivibrator [Wrong Answer] |

C. | flip-flop [Wrong Answer] |

D. | free running multivibrator [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The pure capacitor connected across an A.C. voltage consumed 20 W. This is due to

the capacitive reactance in ohms

the current flowing in the capacitor

the fused capacitor was a big one

none of the above

⇒ In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal

will be quarter

will be doubled

will increase by 50 percent

will increase by 25 percent

⇒ If

*x*

*= a*

_{k}*and*

^{k}*k*&l

TRUE

FALSE

⇒ For the network shown below, determine

*f*

_{Hi}and

*f*

_{HO}, if,

*r*= ∞, C

_{0}*= 36 P*

_{be}*f*, C

*= 4 P*

_{bc}*f*, C

_{ce}= 1 P

*f*, C

_{wo}= 8 P

*f*, C

_{wi}= 6 P

*f<*

738.24 KH

781.2 KH

838.32 KH

938.24 KH

738.24 KH

*z*, 8.6 MH*z*781.2 KH

*z*, 10.6 MH*z*838.32 KH

*z*, 9.2 MH*z*938.24 KH

*z*, 8.2 MH*z*

⇒ Which TM mode in rectangular waveguide has lowest cutoff frequency?

TM

TM

TM

TM

⇒ Consider the circuit shown below of 2 : 1 MUX is given by the function

⇒ Which TM mode in rectangular waveguide has lowest cutoff frequency?

TM

_{11}TM

_{01}TM

_{10}TM

_{21}⇒ Consider the circuit shown below of 2 : 1 MUX is given by the function

*g*=*ac*+*bc*

X ⊕ Y

XY + EXY

XE + XY

none of theseX ⊕ Y

XY + EXY

XE + XY

none of these

⇒ Which of the following is true?

The poisson distribution is limiting case of binomial distribution.

In symmetrical distribution, the mean, median and mode coincide.

Regression is the estimation or production of unknown values of one variables from known values of another variable.

All are true.

⇒ A capacitor whose capacitance C

ω C

ω C

ω C

none of the above

⇒ A certain network has two ideal voltages sources and a large number of ideal resistances. The power consumed in one of the resistances is 4 W when either of two sources is active and the other source is active and the other source is short circuited. When both sources is short circuited.When both sources are active, the power consumed in the same resistor would be

zero or 16 W

4 W or 8 W

zero or 8 W

8 W or 16 W

⇒ For Bode plot of (1 +

slope of 20 dB/decade and phase angle + tan

slope of - 20 dB/decade and phase angle + tan

slope of 20 dB/decade and phase angle - tan

slope of - 40 dB/decade and phase angle - tan

⇒ What is the minimum value of VSWR that may exist on a transmission line?

Less than zero

Zero

One

10

⇒ In a transistor I

100 μA

25 μA

10.1 mA

10.5 mA

⇒ An iron specimen has µ

will be 1000

will be less than 1000

will be more than 1000

may be more or less than 1000

⇒ The core of an atom consists of

nucleus

nucleus and all orbits

nucleus and inner orbits

none of the above

⇒ The voltage and current distributions on a grounded λ/4 dipole (Marconi antenna) are similar to those of a half wave dipole in space.

TRUE

FALSE

⇒ The modulation index of an AM wave is changed from 0 to 1. The transmitted power is

unchanged

halved

increased by 50%

quadrupled

⇒ Which memory requires periodic recharging?

All ROMS

All RAMS

Static RAM

Dynamic RAM

⇒ If E is energy level of electron and E

the probability of finding an occupied quantum state of energy higher than E

all quantum states with energies greater than E

some quantum states with energies greater than E

majority of quantum states with energies greater than E

⇒ The simplest method of suppression of unwanted side band in AM is

filter method

phase shift method

third method

both (a) and (b)

⇒ In a RAM chip with a total of 8096 words, the word addresses range from

1 to 8096

0 to 8095

1 to 8095

0 to 8096

⇒ In the graph of figure, the total number of tree

4

5

6

8

⇒

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 but R is false

A is false but R is true

⇒ The relative permeability of an iron specimen is 400 when B = 0.2 T. If B = 0.4 T, μ

400

less than 400

more than 400

more or less than 400

⇒ The percentage limiting error in an instrument reading 8.3 V and having guaranteed accuracy of 1% of the full scale reading and range of 0-150 V is

0.0181

0.00181

0.181

0.000018

⇒

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

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

A is true but R is false

A is false but R is true

⇒ Which amplifier has a voltage gain of less than 1?

Common emitter

Common collector

Common base

Both CB and CC

⇒

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

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

A is true but R is false

A is false but R is true

⇒ A voltage V

hV

(h + 1) V

hV

V

⇒ The impulse response

a is positive and β is positive

a is negative and β is negative

a is positive and β is negative

a is negative and β is positive

⇒ A constant

600 Ω

zero

infinite

more than 600 ohms

⇒ Which of the following is true?

The poisson distribution is limiting case of binomial distribution.

In symmetrical distribution, the mean, median and mode coincide.

Regression is the estimation or production of unknown values of one variables from known values of another variable.

All are true.

⇒ A capacitor whose capacitance C

_{t}= C_{0}(1- cos ω*t*) is fed by a sinusoidal voltage*v*= V_{0}sin ω*t*. The equation for current*i*isω C

_{0}V_{0}cos ω*t*ω C

_{0}V_{0}sin ω*t*ω C

_{0}V_{0}(cos ω*t*- cos^{2}ω*t*)none of the above

⇒ A certain network has two ideal voltages sources and a large number of ideal resistances. The power consumed in one of the resistances is 4 W when either of two sources is active and the other source is active and the other source is short circuited. When both sources is short circuited.When both sources are active, the power consumed in the same resistor would be

zero or 16 W

4 W or 8 W

zero or 8 W

8 W or 16 W

⇒ For Bode plot of (1 +

*j*ωT) hasslope of 20 dB/decade and phase angle + tan

^{-1}(ωT)slope of - 20 dB/decade and phase angle + tan

^{-1}(ωT)slope of 20 dB/decade and phase angle - tan

^{-1}(ωT)slope of - 40 dB/decade and phase angle - tan

^{-1}(ωT)⇒ What is the minimum value of VSWR that may exist on a transmission line?

Less than zero

Zero

One

10

⇒ In a transistor I

_{E}= 10 mA, I_{CO}= 0.5 μA and a = 0.995. Then I_{CEO}=100 μA

25 μA

10.1 mA

10.5 mA

⇒ An iron specimen has µ

_{r}= 1000 when B = 0.3 T. If B = 0.35 T, µ_{r}will be 1000

will be less than 1000

will be more than 1000

may be more or less than 1000

⇒ The core of an atom consists of

nucleus

nucleus and all orbits

nucleus and inner orbits

none of the above

⇒ The voltage and current distributions on a grounded λ/4 dipole (Marconi antenna) are similar to those of a half wave dipole in space.

TRUE

FALSE

⇒ The modulation index of an AM wave is changed from 0 to 1. The transmitted power is

unchanged

halved

increased by 50%

quadrupled

⇒ Which memory requires periodic recharging?

All ROMS

All RAMS

Static RAM

Dynamic RAM

⇒ If E is energy level of electron and E

_{F}is fermi level, and T = 0 and E > E_{F}, thenthe probability of finding an occupied quantum state of energy higher than E

_{F}is zeroall quantum states with energies greater than E

_{F}are occupiedsome quantum states with energies greater than E

_{F}are occupiedmajority of quantum states with energies greater than E

_{F}are occupied⇒ The simplest method of suppression of unwanted side band in AM is

filter method

phase shift method

third method

both (a) and (b)

⇒ In a RAM chip with a total of 8096 words, the word addresses range from

1 to 8096

0 to 8095

1 to 8095

0 to 8096

⇒ In the graph of figure, the total number of tree

4

5

6

8

⇒

**Assertion (A):** Atomic number of sodium is 11.

**Reason (R):** Sodium has a body centred cubic lattice.

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 but R is false

A is false but R is true

⇒ The relative permeability of an iron specimen is 400 when B = 0.2 T. If B = 0.4 T, μ

_{r}will be400

less than 400

more than 400

more or less than 400

⇒ The percentage limiting error in an instrument reading 8.3 V and having guaranteed accuracy of 1% of the full scale reading and range of 0-150 V is

0.0181

0.00181

0.181

0.000018

⇒

**Assertion (A):** A JFET behaves as a resistor when V_{GS} < V_{P}.

**Reason (R):** When V_{GS} < V_{P}, the drain current in a JFET is almost constant.

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

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

A is true but R is false

A is false but R is true

⇒ Which amplifier has a voltage gain of less than 1?

Common emitter

Common collector

Common base

Both CB and CC

⇒

**Assertion (A):** When reverse voltage across a *p*-*n* junction is increased, the junction capacitance decreases.

**Reason (R):** Capacitance of any layer is inversely proportional to thickness.

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

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

A is true but R is false

A is false but R is true

⇒ A voltage V

_{BB}is applied across the terminals of a UJT. The emitter voltage at peak point ishV

_{BB}(h + 1) V

_{BB}hV

_{BB}+ V_{D}V

_{D}⇒ The impulse response

*h*(*t*) of a linear time-invariant continuous time system is described by*h*(*t*) = exp (a*t*)*u*(*t*) + exp (β*t*)*u*(-*t*), where*u*(*t*) denotes the unit step function, and a and β are constants. This system is stable ifa is positive and β is positive

a is negative and β is negative

a is positive and β is negative

a is negative and β is positive

⇒ A constant

*k*low pass T section filter has a characteristic impedance of 600 p at zero frequency. At*f*=*f*_{c}the characteristic impedance is600 Ω

zero

infinite

more than 600 ohms