Question is ⇒ Assertion (A): Linear ICs include audio amplifier, wideband amplifier, RF amplifier and IF amplifierReason (R): The error voltage in a feedback circuit is very small, Options are ⇒ (A) Both A and R are correct and R is correct explanation for A, (B) Both A and R are correct but R is not correct explanation for A, (C) A is correct R is wrong, (D) A is wrong R is correct, (E) , Leave your comments or Download question paper.

Question is ⇒ Assertion (A): Linear ICs include audio amplifier, wideband amplifier, RF amplifier and IF amplifierReason (R): The error voltage in a feedback circuit is very small, Options are ⇒ (A) Both A and R are correct and R is correct explanation for A, (B) Both A and R are correct but R is not correct explanation for A, (C) A is correct R is wrong, (D) A is wrong R is correct, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Assertion (A): Linear ICs include audio amplifier, wideband amplifier, RF amplifier and IF amplifier Reason (R): The error voltage in a feedback circuit is very small
A.	Both A and R are correct and R is correct explanation for A [Wrong Answer]
B.	Both A and R are correct but R is not correct explanation for A [Correct Answer]
C.	A is correct R is wrong [Wrong Answer]
D.	A is wrong R is correct [Wrong Answer]
View Answer 2 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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Assertion (A): The data bus and address bus of 8085 are multiplexed.

Reason (R): Multiplexing reduces the number of pins.

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 R is wrong
A is wrong R is correct

⇒ The disadvantage of counter type ADC as compared to comparator ADC is that
resolution is low
conversion time is more
circuit is more complex
stability is low

⇒ The number of bits in EBCDIC is
12
10
8
6

⇒ An RL impedance function can also be realized as
RC impedance function
RC admittance function
LC impedance function
LC admittance function

⇒

Assertion (A): A Smith chart can be used for a number of calculations of a transmission line

Reason (R): Smith chart is basically a polar impedance diagram.

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

⇒ In the spectrum of a FM wave
the carrier frequency cannot disappear
the carrier frequency disappears when the modulation index is large
the amplitude of any sideband depends on the modulation index
the total number of sidebands depends on the modulation index

⇒ Magnetic flux can be measured by
capacitive pick up
inductive pick up
resistive pick up
hall effect pick up

⇒ A(A + B) =
A
A B
AB
AB

⇒ If S represents the carrier synchronization at the receiver and r represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is
r = 0.5, S is required
r = 1.0, S is required
r = 0.5, S is not required
r = 1.0, S is not required

⇒ A Schottky diode has
no minority carriers and very low voltage drop in forward direction
no minority carriers and very high voltage drop in forward direction
large number of minority carriers and very high voltage drop in forward direction
large number of minority carriers and very low voltage drop in forward direction

⇒ The power factor of a single phase load can be calculated if instruments available are
one voltmeter, one ammeter
two ammeters
two voltmeters
one voltmeter, one ammeter and one wattmeter

⇒ A plane EM wave is travelling in an unbound loss less dielectric having μ_y = 1 and ε_y = 4, the time average Poynting vector of the wave is 5 W/m³ . The phase velocity v_p (assuming velocity of light as 3 x 10⁸ m/sec) is
1.5 x 10⁸ m/sec
3 x 10⁸ m/sec
2.5 x 10⁸ m/sec
0.5 x 10⁸ m/sec

⇒ In which mode of rectangular waveguide are all field components zero?
TM₀₀
TM₁₁
TM₀₁
TM₁₀

⇒ Graphic equaliser system in stereophonic systems generally have
3 or 4 bands
1 band
more than 8 bands
large number of bands

⇒ During testing of an energy meter, the energy recorded by meter was 0.05 kWh and correct energy was found to be 0.09 kWh. The error and correction respectively are
-0.01 kWh and 0.01 kWh
0.01 kWh and -0.01 kWh
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± 0.01 kWh and 0.01 kWh

⇒ Specific resistance of silver is about
0.16 x 10^-8 Ω-m
1.64 x 10^-8 Ω-m
16 x 10^-8 Ω-m
164 x 10^-8 Ω-m

⇒ If N bits are lumped together to get an N-bit symbol, the possible number of symbols is
2^N
2^{N - 1}
2^{N - 2}
2^{N - 4}

⇒ In RAM, all the information can be obtained at the output with
minimum time delay
unequal time delay
nearly identical time delay
maximum time delay

⇒ i₁(t) for t > 0 is give
2.5 - 2.5e^-2t
2.5 - 1.25e^-2t
1.25 - 1.25e^-2t
None of these

⇒ Which of the following should be used in order to prevent overloading or the last IF amplifier in a receiver?
Variable selectivity
Variable sensitivity
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Squelch

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ac only
dc only
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⇒ The sampling frequency in CD is 10 kHz.
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FALSE

⇒ Assuming that k is an integer what would the result of following expression
8
7
7.5
zero

⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 25 MHz will be
24.09 MHz
24.54 MHz
25.45 MHz
25.91 MHz

⇒ In the FM wave described by equation v = 15 sin (4 x 10⁸ t + 3 sin 1100 t), the carrier frequency and signal frequency respectively are
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⇒ When a p-n Junction is forward biased
the current flow is due to electrons only
the majority carriers in both p and n materials are driven toward the junction.
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both (a) and (c).

⇒ In FSK no synchronous carrier is needed at the receiver
TRUE
FALSE
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none

⇒ A 3-digit voltmeter having a resolution of 100 mV can be used to measure a maximum of
100 V
200 V
1000 V
5000 V

⇒ All other parameters remaining the same, a 3 phase bridge inverter with 180° mode of operation
has the same peak thyristor current as in 120° mode of operation
has higher peak thyristor current than in 120° mode of operation
has lower peak thyristor current than in 120° mode of operation
any of the above

⇒

Assertion (A): R-2R ladder type DAC has higher speed of operation than weighted resistor DAC

Reason (R): R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors

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 true, R is false
A is false, R is true