Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | Out of multiplexer and demultiplexer, which can be used as a logic function generator? |

A. | Multiplexer only [Correct Answer] |

B. | Demultiplexer only [Wrong Answer] |

C. | Both [Wrong Answer] |

D. | None [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 maximum power dissipation capacity of a transistor is 50 mW. If the collector emitter voltage is 10 V, what is the safe collector current that can be allowed through the transistor?

5 mA

2.5 mA

10 mA

25 mA

⇒ Which one of the following is a cut set of the graph in the given fig

1, 2, 3, and 4

2, 3, 4, and 6

1, 4, 5, and 6

1, 3, 4, and 5

⇒ Parallel wire transmission line is an example of

lumped network

distributed

depend upon I/P signal strength

power I/P

⇒ The efficiency of a full wave rectifier using centre tapped transformer is twice that in full wave bridge rectifier.

TRUE

FALSE

⇒ In an oscillator crystal, the parallel resonant frequency is

equal to

higher than

less than

series resonant frequency

⇒ The principal of locality of reference justifies the use of

interrupts

DMA

virtual memory

cache memory

⇒ For checking the parity of a digital word, it is preferable to use

AND gates

NAND gates

EX-OR gates

NOR gates

⇒ Decade counter has 4 flip flops and skips states 10 to 15.

TRUE

FALSE

⇒ The INTELSAT-IV satellite launched in 1974 had two earth coverage antenna and two narrower-angle antennas subtending 4.5°. The signal from narrow-angle antenna was stronger than that from earth- coverage antenna by a factor of

17.34/4.5

17.34 x 4.5

(17.34/4.5)

^{2}

(17.34/4.5)

^{4}

⇒ In an intrinsic semiconductor, at a given temperature T

the number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

the number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

the number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

any of the above

⇒ What is the purpose of DMA facility in microprocessor based system?

To increase the speed of data transfer between the mP and the I/O devices

To increase the speed of data transfer between the mP and the memory

To increase the speed of data transfer between the memory and the I/O devices

To improve the reliability of the system

⇒ In which computer language is 'break' statement used

Fortran 77

Pascal

C

none of the above

⇒ The conductivity of materials found in nature ranges from 10

^{9}ohm

^{-1}m

^{-1}to nearly 10

^{18}ohm

^{-1}m

^{-1}from this it can be concluded that the conductivity of silicon in ohm

^{-1}cm

^{-1}will be nearly

0.5 x 10

^{-15}

0.5 x 10

^{-21}

0.5 x 10

^{-12}

0.5 x 10

^{-3}

⇒ A pole zero plot of a filter is shown in figure. I

low pass filter

high pass filter

band pass filter

all pass filter

⇒ The electrical energy required to heat a bucket of water to a certain temperature is 2 kWh. If heat losses, are 25%, the energy input is

2.67 kWh

3 kWh

2.5 kWh

3.5 kWh

⇒ In floating point representation the number of bits in exponent is

8

7

6

5

⇒ A rectangular waveguide measures 3 x 4.5 cm internally and has a 10 GHz signal propagated in it. Calculate the guide wavelength for dominant mode.

13.5 m

3 m

88/3 m

3/88 m

⇒ The logic represented by the abbreviation ECL is

Emitter Coupled Logic

Electron Carrier Logic

Encoding Clock Logic

Electrostatic Channel Logic

⇒ If D, G and η denote the directly, power gain and efficiency of an antenna, then which of the following relation holds :

DGη = 1

η = DG

D = ηG

D = G/η

⇒ Which of the following statements is false?

Push pull signals are equal and opposite in phase

Class AB operation cannot be used for a push pull audio power output phase

A push pull output transformer has a centre-tapped primary

All of the above

⇒ A sample of N type semiconductor has an electron density of 6.25 x 10

^{18}/cm

^{3}at 300 K. If intrinsic concentration of carriers in this sample is 2.5 x 10

^{13}/cm

^{3}at this temperature, the hole density is

10

^{6}/ cm

^{3}

10

^{8}/ cm

^{3}

10

^{10}/ cm

^{3}

10

^{12}/ cm

^{3}

⇒ The number of essential prime implicant for the logic express

3

5

4

6

⇒ The coupling capacitor mainly affects

bandwidth

lower cut-off frequency

higher cut-off frequency

both lower as well as higher cut-off frequency

⇒ The Kirchoff's laws fail in which of the following circuits?

Linear circuits

Non-linear circuits

Lumped parameters circuits

Distributed parameters circuits

⇒ The function (sin

*x*)/

*x*

has a period 2p, decays with increasing

*x*and has zeros at

*n*p,

*n*= ± 1, ± 2

has a period p

has a period p/2

has a period 2p, decays with increasing

*x*, is an even function and has zeros at

*n*p,

*n*= ± 1, ± 2

⇒ In standard TTL, the 'totem pole' stage refers to

the multi-emitter I/P stage

phase splitter

the O/P buffer

open collector O/P stage

⇒ In force voltage analogy, displacement is analogous to

current

voltage

charge

none of the above

⇒ In end fire array the principle direction of radiation

is perpendicular to the array axis

is perpendicular to the array axis and also to the plane containing the array elements

coincides with the direction of the array

is at 45° to the direction of array axis

⇒ A voltage

*v*= 100 sin ω

*t*+ 10 sin 5 ω

*t*is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is

0.0314 cos 314

*t*+ 0.0157 cos 1570

*t*

0.0314 sin 314

*t*+ 0.0157 sin 1570

*t*

0.0314 cos 314

*t*+ 0.0314 cos 1570

*t*

0.0157 cos 314

*t*+ 0.0157 cos 1570

*t*

⇒ In 8085, TRAP is

always maskable

cannot interrupt a service subroutine

used for catastrophic events like temporary power failure

lowest priority interrupt