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Q1. | For attenuation of low frequencies we should use |

A. | shunt capacitance [Wrong Answer] |

B. | series capacitance [Correct Answer] |

C. | shunt inductance [Wrong Answer] |

D. | series inductance [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒ While obtaining minimal SOP expression

all do not care terms are ignored

all do not care terms are treated as 1

all do not care terms are treated as 0

only such do not care terms which aid minimization are treated as 1

⇒

**Assertion (A):** The impedance of a matched load is equal to characteristic impedance of line.

**Reason (R):** A matched termination absorbs all the power incident on it.

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

⇒ Figure shows a self bias circuit for FET amplifier, I

_{D}= 4 mA. Then I

_{S4 mA2 mA0.4 mA0.2 mA}

⇒ An LVDT is used to measure displacement. The LVDT feeds a Voltmeter of 0-5 V range through a 250 gain amplifier. For a displacement 0.5 mm the output of LVDT is 2 mV. The sensitivity of instrument is

0.1 V/mm

0.5 V/mm

1 V/mm

5 V/mm

⇒ If initial value of

`PROD`

is zero and a program adds X to `PROD`

, Y times we get the resultX + Y

XY

X / Y

X - Y

⇒

**Assertion (A):** The maximum efficiency of a class B push pull amplifier is 78.5%

**Reason (R):** A current mirror uses a compensating diode in parallel with the emitter diode

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

⇒ When .9432 E - 4 is subtracted from .5452 E - 3 in normalized floating point mode

none of the numbers is changed

.9432 E - 4 is changed to .09432 E - 3 and .5452 E - 3 is not changed

.5452 E - 3 is changed to 5.452 E - 4 but .9432 E - 4 is not changed

both Ihe numbers are changed and their exponents are, made equal to -5

⇒ The generally used value of EHV supply in TV receivers is

1 kV per diagonal cm

1 kV per diagonal inch

0.5 kV per diagonal cm

0, 5 kV per diagonal inch

⇒ The current through R

_{1}is(If β = 99, V

_{BE}= 0.7

0.1 mA

0.35 mA

0.2 mA

none

⇒ For the DAC in the given figure V

_{O10 V5 V4 V8 V}

⇒ For AB + A C + BC = AB + A C the dual form is

(A + B) (A + C)(B + C) = (A + B)(A + C)

(A + B ) (A + C)(B + C) = (A + B)(A + C)

(A + B) (A + C) (B + C) = (A + B) (A + C)

none of the above

⇒ The reverse saturation current depends on the reverse bias.

TRUE

FALSE

⇒ 'Burst refresh' in DRAM is also called

Concentrated refresh

Distributed refresh

Hidden refresh

None of the above

⇒ In figure, the current supplied by battery at

*t*= 0.5

*s1.1 A*

1.9 A

0

1.632 A

1.9 A

0

1.632 A

⇒ In a triode the potential of grid (with respect to cathode) is usually

zero

negative

positive

zero or positive

⇒ Cassergain feed is used with a parabolic reflector to

increase the gain of the system

increase the beamwidth of the system

reduce the size of the main reflector

allow the feed to be placed at a convenient point

⇒ In a CD the channel separation is

1 μm

1.6 μm

2.5μm

4 μm

⇒ Which of the following plot can be directly used to determine β?

V

V

V

All of the above

⇒ The output

(1 + cos ωt)

(1 + 0.5 cos ωt)

(1 + cos ωt)

(1 - 0.5 cos ωt)

⇒ In amplitude modulation

the amplitude of carrier varies in accordance with the amplitude of the modulating signal.

the modulating frequency lies in the audio range

the amplitude of the carrier remains constant

the amplitude of the carrier varies in accordance with the frequency of the modulating signal.

⇒ The current rating of dc tachogenerator is usually

small

high

medium

either (b) or (c)

⇒ For operation of enhancement only N-channel MOSFET, value of gate voltage has to be

zero

low positive

high negative

high positive

⇒ In satellite communication, highly directional antennas are used to

direct the spot beam to a particular region of space on Earth

strengthen the beam to overcome the cosmic noise

make corrections in change of polarisation of the beam

select a particular channel in transmission and reception

⇒ Consider the common emitter amplifier shown below with the following circuit parameters: β = 100,

258 Ω

1258 Ω

93 kΩ

∞

⇒ For broadside array, maxima will be obtain at

90°, 270°

180°

45°

at any angle

⇒ Examine the following truth table. The product of sum from this truth tabl

(X + Y) (X + Y)

(X + Y) (X + Y)

(X + Y) (X + Y)

(X + Y) (X + Y)

⇒ The usable bandwidth of ridge wave guide

is lower than that of rectangular waveguide

is higher than that of rectangular waveguide

is almost same as that of rectangular waveguide

is very small as compared to that of rectangular waveguide

⇒ The number of

0

1

2

1 or 2

⇒ Which of the following is not a valid variable name in C?

1

⇒ The dimensions of EMF are

ML

M

ML

ML

⇒ In a triode the potential of grid (with respect to cathode) is usually

zero

negative

positive

zero or positive

⇒ Cassergain feed is used with a parabolic reflector to

increase the gain of the system

increase the beamwidth of the system

reduce the size of the main reflector

allow the feed to be placed at a convenient point

⇒ In a CD the channel separation is

1 μm

1.6 μm

2.5μm

4 μm

⇒ Which of the following plot can be directly used to determine β?

V

_{CE}versus*i*_{C}for constant I_{B}V

_{BE}versus*i*_{B}for constant V_{CE}V

_{CB}versus*i*_{C}for constant I_{B}All of the above

⇒ The output

*y*(*t*) of a linear time invariant system is related to its input*x*(*t*) by the following equation*y*(*t*) = 0.5*x*(*t*-*t**+ 1) +*_{d}*x*(*t*-*t**) + 0.5*_{d}*x*(*t*-*t**+ 7). The filter transfer function*_{d}*H*(ω) of such a system is given by(1 + cos ωt)

*e*^{-jωt}*d*(1 + 0.5 cos ωt)

*e*^{-jωt}*d*(1 + cos ωt)

*e*^{jωt}*d*(1 - 0.5 cos ωt)

*e*^{-jωt}*d*⇒ In amplitude modulation

the amplitude of carrier varies in accordance with the amplitude of the modulating signal.

the modulating frequency lies in the audio range

the amplitude of the carrier remains constant

the amplitude of the carrier varies in accordance with the frequency of the modulating signal.

⇒ The current rating of dc tachogenerator is usually

small

high

medium

either (b) or (c)

⇒ For operation of enhancement only N-channel MOSFET, value of gate voltage has to be

zero

low positive

high negative

high positive

⇒ In satellite communication, highly directional antennas are used to

direct the spot beam to a particular region of space on Earth

strengthen the beam to overcome the cosmic noise

make corrections in change of polarisation of the beam

select a particular channel in transmission and reception

⇒ Consider the common emitter amplifier shown below with the following circuit parameters: β = 100,

*g*= 0.3861 A/V,_{m}*r*_{0}= ∞*r*= 259 Ω, R_{p}_{s}= 1 kΩ, R_{B}= 93 kΩ, R_{C}= 250 Ω, R_{L}= 1 kW, C_{1}= ∞ and C_{2}= 4.258 Ω

1258 Ω

93 kΩ

∞

⇒ For broadside array, maxima will be obtain at

90°, 270°

180°

45°

at any angle

⇒ Examine the following truth table. The product of sum from this truth tabl

(X + Y) (X + Y)

(X + Y) (X + Y)

(X + Y) (X + Y)

(X + Y) (X + Y)

⇒ The usable bandwidth of ridge wave guide

is lower than that of rectangular waveguide

is higher than that of rectangular waveguide

is almost same as that of rectangular waveguide

is very small as compared to that of rectangular waveguide

⇒ The number of

*p*-*n*junctions in a semiconductor diode are0

1

2

1 or 2

⇒ Which of the following is not a valid variable name in C?

1

*a**a*1 2*a b*123*a b c*123⇒ The dimensions of EMF are

ML

^{2}I^{-1}T^{-3}M

^{-1}T^{-3}ML

^{2}I^{-2}T^{-3}ML

^{3}I^{-1}T^{-3}