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. | A Weinbridge oscillator is a |

A. | VHF oscillator [Wrong Answer] |

B. | RF oscillator [Wrong Answer] |

C. | microwave oscillator [Wrong Answer] |

D. | audio frequency oscillator [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 :**

⇒ A microcomputer has a 64 K memory. What is the hexadecimal notation for the first memory location?

0

FFFF

0FFF

3FFF

⇒ The range of value "

*a*" for which system will be stable. If impulse response of DT system is =

*a*

*∪[*

^{n}*n*]

*a*> 1

*a*< 1

1 <

*a*< ∞

-1 <

*a*< 1

⇒ The classes of solid dielectrics are

A, B, C, D, E, F, H

A E B F H C D

Y A E B F H C

A E B F H C

⇒ At t = 0

^{+}, the current

*i*

_{1- V/2R- V/4R- V/Rzero}

⇒ A lead compensator is basically a

high pass filter

low pass filter

band stop filter

none of the above

⇒ The peak factor is the ratio of

peak and rms values

peak and average values

rms and average values

none of the above

⇒ In all metals

conductivity decreases with increase in temperature

current flow by electrons as well as by holes

resistivity decreases with increase in temperature

the gap between valence and conduction bands is small

⇒ Computer virus is a piece of rough software of unknown origin that

copies itself like a breeding germ

spreads from one machine to another

eats away processing power

all of the above

⇒ A single phase full converter can operate in

4 quadrants

3 quadrants

2 quadrants

1 quadrant

⇒ In flip flops the duration of clock pulse is about

3 ns

10 ns

25 ns

50 ns

⇒ F = ∑(0, 3, 4, 5, 7) =

[B ⊕ C] + AC

B'C' + BC + AC

AB + BC + CA

None

⇒ The capacity of a battery is expressed in terms of

current

voltage

none of these

current and voltage

⇒ Which of the following pairs of octal and binary numbers are not equal?

111 11011

_{2}= 767

_{8}

110110101

_{2}= 665

_{8}

11010

_{2}= 3

_{8}

10101.11

_{2}= 25.6

_{8}

⇒ In figure the collector to emitter breakdown voltage of the transistor (βV

_{CEO}) shoul

more than V

_{CC}

more than 0.5 V

_{CC}

more than V

_{CC}+ E

more than 2 V

_{CC}

⇒ ALU carries out

arithmetic operations

logic operations

both arithmetic and logic operations

none of the above

⇒ An 8 bit DAC has a full scale output of 2 mA and full scale error of ± 0.5%. If input is 10000000 the range of outputs is

994 to 1014 μA

990 to 1020 μA

800 to 1200 μA

none of the above

⇒ Let the initial contents of

`ACC and CY`

in 8085 be - CY = 1
- ACC = 10000001

After the instruction `RAL`

is executed twice the contents of `CY and ACC`

respectively will be1 and 00000011

0 and 00000111

1 and 00000111

0 and 00000011

⇒ In figure, V

_{C}is approximately equa

2 V

4.6 V

8 V

7.6 V

⇒ A transmitter power of 10 W is increased by 30 dB. The effective radiated power is

100 W

1000 W

10000 W

100000 W

⇒ The function δ' (

*t*-

*b*) is

a step function originating at

*t*=

*b*

an impulse function originating at

*t*=

*b*

a unit doublet originating at =

*t*-

*b*

none of the above

⇒ A scheme shown below is to generate a wide band FM modulate sign

88 MHz, 112 MHz

96 MHz, 104 MHz

92 MHz, 108 MHz

90 MHz, 110 MHz

⇒ Which one of the following is valid integer variable in FORTRAN 77?

`BRG`

`IBRG`

`VS`

`PEC`

⇒ In a series ac circuit a voltage of 20 V at 25 Hz causes a current of 0.20 A, while the same voltage at 75 Hz causes a current of 0.12 A. The circuit consists of

R and C in parallel

R and C in series

R and L in series

either (a) or (b)

⇒ If a microstrip is enclosed in a metal enclosure

the radiation losses are increased

the radiation losses are reduced RL

the capacitance becomes zero

the inductance becomes zero

⇒ A waveguide behave as

high Pass filter

low Pass filter

band Pass filter

all Pass filter

⇒ The circuit of figure is used to measure the value R

_{x}. Ammeter resistance R

_{a}= 0.1 Ω voltmeter resistance R

_{v}= 5000 Ω. It R

_{x1}and R

_{x2}, are the measured values of R

_{x}with switch in position 1 and 2, the mean of R

_{x1}, and R

_{x2},

9.98 Ω

10 Ω

10.04 Ω

10.1 Ω

⇒ In the given figure shows the equivalent circuit of a magic tee. If all ports are mat

*n*

_{E}=

*n*

_{H}= 2

*n*

_{E}=

*n*

_{H}= 0.707

*n*

_{E}= 2,

*n*

_{H}= 0.707

*n*

_{H}= 0.707,

*n*

_{H}= 2

⇒ If

*f*(

*t*) is an even function, the coefficients F

_{n}in the exponential form of Fourier series

are real

are imaginary

are complex

may be real or imaginary

⇒ An

*m*derived low pass filter has

*f*

_{c}= 1000 Hz and

*m*= 0.6. This filter will have infinite attenuation at

*f*= 1250 Hz

all frequencies above 1000 Hz

*f*= 1562.5 Hz

*f*= 1666.67 Hz

⇒ In FDM systems used for telephone, which modulation scheme is adopted?

AM

DSB-SC

SSB-SC

FM