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Assertion (A): Wien bridge can be used for measuring frequency. Reason (R): A frequency meter for 50 Hz system has a frequency range of 40 to 60 Hz. | |
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 [Wrong Answer] |
C. | A is true R is false [Correct Answer] |
D. | A is false R is true [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The multiplication time for 10-bit numbers with 1 MHz clock will be
32 μ sec
20 μ sec
21 μ sec
22 μ sec
⇒ Beam width of an antenna is expressed in
metres
degrees
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⇒ A high level language is less efficient than machine language.
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⇒ The V MOS can handle __________ currents than a conventional MOSFET.
much lower
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almost half
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⇒ In a 100 turn coil, if the flux through each turn is (t^{3} - 2t)mW_{b}, the magnitude of the induced emf in the coil at a time of 4 sec is
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⇒ Evaluate the power stored in inductor and capac
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A-1, B-2, C-3
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⇒ Beam width of an antenna is expressed in
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degrees
ratio of two powers
ratio of two angles
⇒ A high level language is less efficient than machine language.
TRUE
FALSE
⇒ The V MOS can handle __________ currents than a conventional MOSFET.
much lower
almost same
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much larger
⇒ The primary function of lag compensator is to provide sufficient
gain margin
phase margin
both gain margin and phase margin
either (a) or (b)
⇒ In a 100 turn coil, if the flux through each turn is (t^{3} - 2t)mW_{b}, the magnitude of the induced emf in the coil at a time of 4 sec is
46 mV
56 mV
4.6 V
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25 J, 12.5 J
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shows spontaneous magnetisation below a certain temperature
have resistivity very high as compared to that of iron
can be used even at microwave frequencies
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⇒ In 8085 microprocessor the value of the most significant bit of the result following the execution of any arithmetic or Boolean instruction is stored in
the carry status flag
the auxiliary carry status flag
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zero status flag
⇒ A/D parallel converter is also called flash converter.
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0 V
10 V
20 V
40 V
⇒ In an inverting amplifier using op-amp the current input to the inverting terminal
is equal to the current through feedback resistance
is less than the current through feedback resistance
is more than the current through feedback resistance
may be equal to, less or more than current through feedback resistance
⇒ For a periodic waveform, the power spectral density and correlation function form
a Laplace transform pair
a Fourier transform pair
either (a) or (b)
neither (a) nor (b)
⇒ Reception through space wave is limited to line of sight distance.
TRUE
FALSE
⇒ The addition of a zero to the open loop transfer function
pulls the root locus to the left and makes the system more stable
pulls the root locus to the right and makes the system less stable
either (a) or (b)
neither (a) nor (b)
⇒ In the wheatstone bridge in figure, each resistance is increased by 0.05%. The value of v_{0} will
50 mV
5 mV
0.1 mV
zero
⇒ Principle of superposition is applicable to
linear systems only
nonlinear systems only
both linear and non linear system
linear systems and some nonlinear systems
⇒ Calculate wave impedance for TE mode
(377)Ω
226 Ω
∞
629 Ω
⇒ A sequence detector is required to give a logical output of 1 whenever the sequence 1011 is detected in the incoming pulse stream. Minimum number of flip-flops needed to built the sequence detector is
4
3
1
2
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decreases
increases
is not affected
either (b) or (c)
⇒
Assertion (A): RF tuner is called front end of TV receiver
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Both A and R are correct and R is correct explanation of A
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⇒ Which of the following array names is invalid in Fortran 77?
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{6, 4 - 2j, 2, 2j}
{6, 4j, 2, - 4j}
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⇒ In a CE amplifier drives a low load resistance directly the result will be
overloading of amplifier
underloading of amplifier
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A. | Serial Binary adder | 1. | (2n - 1)t_{pd} |
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4. | 6t_{pd} for 4 bit carry look ahead adder |
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⇒ If 10 V is the peak voltage across the secondary of the transformer in a half wave rectifier (without any filter circuit), then the maximum voltage on the reverse biased diode will be
20 V
14.14 V
10 V
7.8 V
⇒ In a circular waveguide TE_{21} mode has lowest cutoff frequency
TRUE
FALSE
⇒ An electrical network with 8 independent nodes will have __________ nodal equations.
4
6
7
8
⇒ For a photoconductor with equal electron and hole mobilities and perfect ohmic contacts at the ends, an increase in illumination results in
a change in O.C. voltage
a change in S.C. current
a decrease in resistance
an increase in resistance