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Q1. | The term VLSI generally refers to a digital IC having |

A. | more than 1000 gates [Wrong Answer] |

B. | more than 100 gates [Wrong Answer] |

C. | more than 1000 but less than 9999 gates [Correct Answer] |

D. | more than 100 but less than 999 gates [Wrong Answer] |

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

⇒ A sinusoidal ac voltage of amplitude 100 V is applied to a rectifying device which offers 10 Ω resistance in forward direction and infinite resistance in reverse direction. The reading on hot wire ammeter will be

0.416666666666667

0.208333333333333

3.185 A

1.414 A

⇒ Which one is a linear system?

*y*[

*n*] =

*x*[

*n*] x

*x*[

*n*- 1]

*y*[

*n*] =

*x*[

*n*] +

*x*[

*n*- 10]

*y*[

*n*] =

*x*

^{2}[

*n*]

(a) and (c)

⇒ The figures shows the symbo

p channel depletion MOSFET

p channel enhancement MOSFET

complementary MOSFET

p channel JFET

⇒ For the circuit shown in the following figure I

_{0}-I

_{3}are inputs to the 4:1 multiplexer R(MSB) and S are control

PQ + PQ S + Q R S

P Q + PQ R + P Q S

P Q R + P QR + PQRS + Q R S

PQ R + PQR S + P Q R S + Q R S

⇒ In an RC series circuit excited by dc voltage E, the current at

*t*= 0 is

E/R

E/C

zero

infinity

⇒ In case of surface waves the field strength at a point is directly proportional to

antenna height

wave frequency

current of the antenna

distance of the point from the antenna

⇒ An ideal Op-amp is an ideal

voltage controlled current source

voltage controlled voltage source

current controlled current source

current controlled voltage source

⇒ Binary 1000 multiplied by binary 1000 gives

10000

100000

1000000

10000000

⇒

**Assertion (A):** In series R-L-C circuit, the current may lead or lag the voltage depending on the value of R.

**Reason (R):** Phase angle of an R-L series circuit is tan^{-1} (ωL/R).

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

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

A is true but R is false

A is false but R is true

⇒ In microwave detector used in laboratory measurements of relative power levels, standing wave ratio is about

0.1

1.25

5

10

⇒ Which of the following plot can be used to show the input volt-ampere characteristics of a common-emitter configuration?

V

_{BE}versus

*i*

_{B}for constant values of V

_{CE}

V

_{CE}versus

*i*

_{C}for constant values of I

_{B}

V

_{CE}versus

*i*

_{C}for constant values of I

_{E}

None of the above

⇒ The Ebers-moll equation for I

_{E}in CB configuration is given by

I

_{E}= a

_{n}I

_{C}I

_{EC0}

I

_{E}= a

_{I}I

_{C}+ I

_{C0}

I

_{E}= a

_{n}I

_{C}+ I

_{C0}(

*e*

^{qVEB/KT-1})

I

_{E}= a

_{I}I

_{C}+ I

_{E0}(

*e*

^{qVEB/KT}- 1)

⇒ The logic circuit in the given figure realizes the func

(A + B + C) (D E)

(A + B + C) (D E)

(A + B + C) (D E)

(A + B + C) (D E)

⇒ For TE or TM modes of propagation in bounded media, the phase velocity is

independent of frequency

is a linear function of frequency

is a non-linear function of frequency

can be frequency dependent or frequency independent on the source

⇒ Two 2's complement number having sign bits X and Y are added and the sign bit of the result is Z. then, the occurrence of overflow is indicated by the Boolean function.

XYZ

X Y Z

X YZ + XY Z

XY + YZ + ZX

⇒ The carriers of

*n*channel JFET are

free electrons and holes

holes

free electrons or holes

free electrons

⇒ Which liquid crystal is used for LCD display?

Mercury

Pneumatic fluid

Aqua regia

Liquid boron

⇒ Programs like compilers, assemblers etc. are stored in a mircocomputer in

registers

cache memory

primary memory

mass storage

⇒ Windows can run several tasks simultaneously.

TRUE

FALSE

⇒ If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given

3.0 x 10

^{8}m/sec

2 x 10

^{8}m/sec

6.28 x 10

^{7}m/sec

2 x 10

^{7}m/sec

⇒ If the Nyquist plot does not encircle the (-1 +

*j*0) point the system is always stable.

TRUE

FALSE

⇒ +12 V supply is given to plates

*a, d, g,*and 0 V to other plates and grid of a VF display. The plates which will glow are

*a, d, g*

*b, c, e, f*

all

none

⇒ Which one is correct option?

- A pure capacitor never dissipates energy, but only stores.
- Capacitor can store finite amount of energy even cunent is zero.
- The current through a capacitor is zero if voltage across it d.c.
- Voltage across a capacitor cannot change instantaneously since it would require an infinite current.
*q*_{c}(0^{-}) =*q*_{c}(0^{+})

5, 4, 3, 2

3, 4, 1, 2

2, 4, 3, 1

1, 2, 3, 4, 5

⇒ Karnaugh map is used to

minimise the number of flip flops in a digital circuit

minimise the number of gates only in a digital circuit

minimise the number of gates and fan in a digital circuit

design gates

⇒ If carrier is modulated by a digital bit stream having one of the possible phases of 0°, 90°, 180°, and 270°, then modulation is called

BPSK

QPSK

QAM

MSK

⇒ A capacitor with initial charge

*q*

_{0}at

*t*= 0

^{+}acts as

current source

voltage source

short-circuit

open-circuit

⇒ The low pass filter characteristic shown in figure realiza

TRUE

FALSE

⇒ In a R-L-C circuit at resonance is

maximum in series resonance and minimum in parallel resonance.

maximum in parallel resonance and minimum in series resonance

minimum in both series and parallel resonances

maximum in both series and parallel resonances.

⇒ If transmission bandwidth is doubled in FM, SNR is

doubled

raised four times

decreased four times

halved

⇒ If quadratic equation

*x*

^{2}- 1000

*x*+ 25 = 0 is solved using floating point arithmetic with 4 digit mantissa, the roots are

.1000 E 4 and .1000 E 4 respectively

.0000 E 4 and .0000 E 4 respectively

.1000 E 4 and .0000 E 4 respectively

None of the above