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Assertion (A): Magnetism can be explained by the theory of magnetic domains. Reason (R): The existence of magnetic domains is evident from the Bitter powder patterns. | |
A. | Both A and R are true and R is correct explanation of A [Wrong Answer] |
B. | Both A and R are true but R is not correct explanation of A [Correct Answer] |
C. | A is true but R is false [Wrong Answer] |
D. | A is false but R is true [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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⇒ The V_{o} of the op-amp circuit shown in the give
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2
4
0.5
0.25
⇒ The V_{o} of the op-amp circuit shown in the give
11 V_{i}
10 V_{i}
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zero
⇒ The circuit shown in the figure is tha
non-inverting amplifier
Inverting amplifier
an oscillator
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⇒ In FORTRAN 77 IFIX (-73.2) gives the value
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-7
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⇒ When a voltage is applied to a semiconductor crystal then the free electrons will flow.
towards positive terminal
towards negative terminal
either towards positive terminal or negative terminal
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⇒ The number of channels in a stereophonic system is
8
4
2
1
⇒ For satellite transmission, analog signals may be converted into digital form with the help of
modem
transponder
codec
compandor
⇒ If a and b are the dimensions of waveguide then
a = 3b
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⇒ If a dipole is meant for a frequency of 1 MHz, the length of each rod is about
5 m
20 m
100 m
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⇒ Frequency domain of a periodic triangular function is a
discrete sinc function
continuous sampling function
discrete sampling function
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⇒ Dielectric constant and conductivity of rocky soil and flat sandy soil are around
10 and 20 mho/cm respectively
20 and 10 mho/cm respectively
2 and 5 mho/cm respectively
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TRUE
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⇒ For a P-N diode, the number of minority carriers crossing the junction depends on
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potential barrier
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2
3
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error detector and feedback element
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error detector and control elements
error detector, control elements and feedback elements
⇒ The circuit in the given figur
positive logic OR gate
negative logic OR gate
negative logic AND gate
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8
9
10
11
⇒ Which of the transistor models is most preferred for the analysis of a transistor circuit both at mid-band and at high frequencies?
h-parameter model
y-parameter model
s-parameter model
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⇒ In the given figure, if R = X_{C}, voltage gai
0 dB
3 dB
-3 dB
20 dB
⇒ In a network
Number of links = Number of branches - number of nodes + 1
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Assertion (A): There are no convergence issues with the discrete-time Fourier series in general.
Reason (R): A discrete-time signal is always obtained by sampling a continuous-time signal.
Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ The ideal op-amp has the following characteristics
R_{i} = ∞, A = ∞, R_{0} = 0
R_{i} = 0, A = ∞, R_{0} = 0
R_{i} = ∞, A = 0, R_{0} = 0
R_{i} = 0, A = ∞, R_{0} = ∞
⇒ The application of gate signal decreases the break over voltage of on SCR.
TRUE
FALSE
⇒ A current of 1 A in the coil of an iron cored electromagnet cause a flux density of 0.2.T. If the current is 2 A, B=
0.2 T
0.4 T
0.4 T or less
0.4 T or more
⇒ The amplifier circuit shown below uses a silicon transistor. The capacitors C_{c} and C_{E} can be assumed to be short at signal frequency and the effect of output resistance r_{0} can be ignored. If C_{E} is disconnected from the circuit, which one of the following statements is T
The input resistance R_{i} increases and the magnitude of voltage gain A_{v} decreases
The input resistance R_{i} decreases and the magnitude of voltage gain A_{v} decreases
Both input resistance R_{i} and the magnitude of voltage gain A_{v} decrease
Both input resistance R_{i} and the magnitude of voltage gain A_{v} increase
⇒ A 2-terminal network consists of one of the RLC elements. The elements is connected to an ac supply. The current through the element is 1 A. When an inductor is inserted in series between the source and the element, the current through the element becomes 2 A. What is this element?
A resistor
An inductor
A capacitor
Cannot be single element