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Q1. | In a FM receiver, amplitude limiter |

A. | amplifiers low frequency signals [Wrong Answer] |

B. | reduces the amplitude of signals [Wrong Answer] |

C. | eliminates any change in amplitude of received FM signals [Correct Answer] |

D. | none of the above [Wrong Answer] |

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

⇒ For a npn BJT transistor

*f*is 1.64 x 10

_{β}^{8}H

*z*. C

_{μ}= 10

^{-14}F; C

_{p}= 4 x 10

^{-13}F and DC current gain is 90. Find

*f*and

_{T}*g*(

_{m}*f*= cut off frequency, C

_{β}_{μ}= capacitance, C

_{p}= parasitic capacitance,

*g*= transconductance,

_{m}*f*= gain BW product)

_{T}*f*= 1.47 x 10

_{T}^{10}H

*z*;

*g*= 38 milli mho

_{m}*f*= 1.64 x 10

_{T}^{8}H

*z*;

*g*= 30 milli mho

_{m}*f*= 1.47 x 10

_{T}^{9}H

*z*;

*g*= 38 mho

_{m}*f*= 1.33 x 10

_{T}^{12}H

*z*;

*g*= 0.37 m-mho

_{m}⇒ The resolution of a DAC depends on which of the following?

The number of bits

Monotonicity

Reference voltage

The values of resistance

⇒ A voltage of about 200 V dc can be measured

directly by dc potentiometer

by dc potentiometer in conjunction with a volt ratio box

a dc potentiometer in conjunction with a known resistance

both (b) and (c)

⇒ The most commonly used transistor amplifier circuit is

CB

CC

CE

CE or CC

⇒ The function shown in the given Figure can be writte

sum of two sinusoidal functions

sum of two sinusoidal functions one originating at

*t*= 0 and the other at

*t*= 1

difference of two sinusoidal functions one originating at

*t*= 0 and the other at

*t*= 1

none of the above

⇒ The equation ∇ . J = 0 is called

Poisson's equation

Kirchoff's node equation

Continuity equation for static currents

Continuity equation for sampling currents

⇒ A cordless telephone using separate frequencies for transmission in base and portable units is known as

duplex arrangement

half duplex arrangement

either (a) or (b)

neither (a) nor (b)

⇒ A transmitter power of 5 W is increased by 20 dB. The effective radiated power is

5 W

100 W

25 W

500 W

⇒ A gate function which occurs at

*t*=

*t*

_{0}and lasts for duration T can be written as

*u*(

*t*-

*t*

_{0}- T)

*u*(

*t*-

*t*

_{0}) =

*u*(

*t*-

*t*

_{0}- T)

*u*(

*t*-

*t*

_{0}) -

*u*(

*t*-

*t*

_{0}- T)

*u*(

*t*-

*t*

_{0}) -

*u*(

*t*-

*t*

_{0}+ T)

⇒ In the above case if the modulating frequency is increased to 20 kHz the bandwidth will be

0.05 MHz

1 MHz

2 MHz

4 MHz

⇒ In a 3 phase full converter, the firing angle is less than 60°. The instantaneous output voltage

will have positive part only

will have both positive and negative parts

may have both positive and negative parts

will have negative part if load is inductive

⇒ The unit of ∇ x H is

Ampere

Ampere/meter

Ampere/m

^{2}

Ampere-meter

⇒ In an FM signal, the power

increases as the modulation index increases

reduces as the modulation index increase

increases as the modulation index decreases

remains constant when the modulation index increases

⇒ In

*p*-

*n*-

*p*transistor the current I

_{E}has two components viz. I

_{EP}due to injection of holes from

*p*-region to

*n*-region and I

_{E}due to injection of electrons from

*n*-region to

*p*-region. Then

I

_{Ep}and I

_{En}are almost equal

I

_{Ep}>> I

_{En}

I

_{En}>> I

_{Ep}

either (a) or (c)

⇒ A voltage v(

*t*) which is a gaussian ergodic random process witha mean of zero and a varance of 4 volt

^{2}is measured by a meter which first square and then reads its dc component. The reading will be

0

4

16

2

⇒ The output of the circuit shown below will be of the frequ

125 Hz

250 Hz

500 Hz

750 Hz

⇒ In 8085 microprocessor, in order to enable RST 5.5, RST 6.5 and RST 7.5 interrupts, which of the following instruction are needed?

EI only

SIM only

EI and SIM both

None

⇒ Power gain of antenna equals directive gain in VHF and UHF range if and only if efficiency of the antenna is __________ .

0.25

0.5

0.75

1

⇒ Decimal -90 equals __________ in 8 bit 2s complement

1000 1000

1010 0110

1100 1100

0101 0101

⇒ In a proportional plus integral control action

proportional gain K

*is adjustable but integral time T*

_{p}*is constant*

_{i}proportional gain K

*is adjustable but integral time T*

_{p}*is adjustable*

_{i}both proportional gain K

*and integral time T*

_{p}*are adjustable*

_{i}both proportional gain K

*and integral time T*

_{p}*are constant*

_{i}⇒ Debye temperature of metals is

about 10 K

about 200 K

about 600 K

about 2 K

⇒ A memory system has a 9 chips. If MTBF of one clip is 900 000 hours, MTBF of complete memory system is

900000 hours

100000 hours

8100000 hours

1800000 hours

⇒

**Assertion (A):** In a BJT base current is very small.

**Reason (R):** In a BJT recombination in base region is high.

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

⇒ Typical values of current gains for CE, CB and CC amplifiers are

120, 120 and 1 respectively

120, 1 and 120 respectively

1, 120 and 120 respectively

1, 1 and 120 respectively

⇒ How many zone bits are th

2

4

8

16

⇒ Adder is a combinational logic circuit.

TRUE

FALSE

⇒ In low power factor wattmeter, the compensating coil is connected

in series with current coil

in parallel with current coil

in series with pressure coil

in parallel with pressure coil

⇒ The decimal equivalent of the hexadecimal number E 5 is

279

229

327

0

⇒ The output wave of a cycloconverter consists of a number of segments derived from the input wave.

TRUE

FALSE

⇒ Nodal analysis is applicable to __________ .

planar network

planar and Non-planar both

circuit containing only voltage source

non planer