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Q1. | Four memory chips of 16 x 4 size have their address buses connected together. This system will be of size |

A. | 64 x 4 [Wrong Answer] |

B. | 16 x 16 [Correct Answer] |

C. | 32 x 8 [Wrong Answer] |

D. | 256 x 1 [Wrong Answer] |

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

⇒ PROM is

Permanent Read Only Memory

Polarized Read Only Memory

Positive Read Only Memory

Programmable Read Only Memory

⇒ In 8086 the flag which enables or disables external interrupts is

IF

DF

TF

CF

⇒ An FM signal is modulated by an 8 kHz sine wave and has maximum and minimum frequencies of 100.05 MHz and 99.95 MHz respectively. Its deviation frequency is

100 kHz

100 MHz

500 kHz

108 kHz

⇒ Which of the transistor models is most preferred for the analysis of a transistor circuit both at mid-band and at high frequencies?

h-parameter model

y-parameter model

s-parameter model

hybrid-p model

⇒ The Hilbert transform of cos ω

_{1}

*t*+ sin ω

_{2}

*t*is

sin ω

_{1}

*t*+ cos ω

_{2}

*t*

sin ω

_{1}

*t*- cos ω

_{2}

*t*

cos ω

_{1}

*t*- cos ω

_{2}

*t*

- sin ω

_{1}

*t*+ cos ω

_{2}

*t*

⇒ In a Hurwitz polynomial

all coefficients are non-negative

the coefficients may be positive or negative

all coefficients are negative

all coefficients are non-negative and all zeros should be either in left half plane or simple on the imaginary axis

⇒ In a degenerate

*n*type semiconductor material, the Fermi level,

is in valence band

is in conduction band

is at the centre in between valence and conduction bands

is very near valence band

⇒

**Assertion (A):** Bolometer is frequently used in microwave power measurement.

**Reason (R):** In a bolometer the input microwave power causes a change in resistance.

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

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

A is correct but R is wrong

A is wrong but R is correct

⇒ A counter has 4 flip flops. It divides the input frequency by

4

2

8

16

⇒ Costa's receiver is used for

coherent detection of AM-SC signal

asynchronous detection of AM-SC signal

amplitude modulation of signal

frequency modulation of signal

⇒ The mobility of e

^{-}for Ge and Si respectively is

1.66, 2.5

2.5, 1.66

2.7, 2.33

2.33, 2.7

⇒ Which has the highest power dissipation per gate?

ECL

TTL

CMOS

PMOS

⇒ Calculate the conductivity of pure silicon at room temperature when the concentration of carriers is 1.6 x 10

^{10}per cm

^{3}. Take μ

_{e}= 1500 cm

^{2}/V-sec, μ

_{h}= 500 cm

^{2}/V-sec at room temperature,

5.12 x 10

^{-16}

5 x 10

^{+16}

10

^{16}

5 x 10

^{20}

⇒

**Assertion (A):** The main use of positive feedback is in oscillator circuits.

**Reason (R):** In an oscillator the loop gain Aβ is kept slightly more than unity

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ Which of the following is not correct?

P(A) = P(A) - 1

0 ≤ P ≤ 1

If A and B are mitual exclusive then P(A + B) = P(A) + P(B)

P(A) = 1 - P(A)

⇒ A divide by 78 counter can be obtained by

6 numbers of mod-13 counters

13 numbers of mod-6 counters

one mod-13 counter followed by mod-6 counter

13 number of mod-13 counters

⇒ Hari (H), Gita (G), Irfan (I) and Saira (S) are sibiligs (i.e. brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following fa

HSIG

SGHI

IGSH

IHSG

⇒ In 8355, the ROM is organized as __________ words of 8 bits each.

2000

2048

8355

835

⇒ A 2 μF capacitor is shunted by a 1 kΩ maintained at temperature 400 K. The rms noise voltage across the capacitor over the entire frequency band is:

6.25 x 10

^{-8}V

5.25 x 10

^{-6}V

6.25 x 10

^{-6}V

5.25 x 10

^{-8}V

⇒ The M.K.S. unit of magnetic field intensity is

ampere

ampere/metre

volt

volt/metre

⇒ The

*P*-type substrate in a conventional

*pn*Junction isolated integrated circuits should be connected to

any where

a dc ground potential

the most positive potential available in the circuit

the most negative potential available in the circuit

⇒ The skip distance is the maximum distance upto which ionospheric reflection is possible.

TRUE

FALSE

⇒ The number of protons in germanium atom is

4

16

28

32

⇒ For a series resonant circuit at low frequency circuit impedance is __________ and at high frequency circuit impedance is _______

capacitive, inductive

inductive, capacitive

resistive, inductive

capacitive, resistive

⇒ A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What must be the minimum gain of the oscillator to provide oscillations?

40

60

100

130

⇒ The pre-emphasis in FM aids in providing extra noise immunity by

emphasizing only the higher frequency components

emphasizing the entire frequency band

emphasizing only the lower frequency band

cutting down the low frequency noise

⇒ The source of which of the following noise is different from that of the remaining?

Solar noise

Cosmic noise

Galactic noise

Atmospheric noise

⇒ In figure V

_{CE}(sat) = 0.1 V. Then I

_{C}(sa

10 mA

20 mA

30 mA

40 mA

⇒ In using Nyquist stability criterion it is not necessary to determine closed loop poles.

TRUE

FALSE

⇒ Microwaves

get reflected by ionosphere

are absorbed by ionosphere

are neither reflected nor absorbed by ionosphere

are both reflected and absorbed by ionosphere