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Assertion (A): The gall tinsley potentiometer is a coordinate potentiometer and has two exactly similar potentiometers. Reason (R): An ac potentiometer may measure the unknown voltage in polar form or rectangular coordinate form. | |
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 R is false [Wrong Answer] |
D. | A is false R is true [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ A 4 input AND gate is equivalent to
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three switches in parallel and one in series
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⇒ The open loop frequency response of a unity feed back system is as u
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⇒ Consider the expression b = acd (xz). The correct C statement for above expression is
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List I | List II | ||
---|---|---|---|
A. | T (Reflection coefficient) = 0 | 1. | (Z_{L} - Z_{o})/(Z_{L} + Z_{o}) |
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Assertion (A): PC-XT is a personal computer.
Reason (R): PC-XT uses a floppy drive and has a medium sized hard disc.
Both A and R are correct and R is correct explanation of A
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TRUE
FALSE
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a c d (x * z)
a* c* d* (x z)
a * c * d (x * z)
None of the above
⇒ The resonance frequency of the circui
5.4 Kn_{2}
4.5 Kn_{2}
5 Kn_{2}
∞
⇒ i_{1}(t) for t > 0 is give
2.5 - 2.5e^{-2t}
2.5 - 1.25e^{-2t}
1.25 - 1.25e^{-2t}
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⇒ In an SCR, the anode current is controlled by
gate current only
external circuit only
both gate current and external circuit
none of the above
⇒ The effect of adding poles and zeros can be determined quickly by
Nichols chart
Nyquist plot
Bode plot
Root locus
⇒ Bipolar IC memories are fabricated using
high density versions of MOSFET or low density versions of bipolar transistor flip-flop.
high density version of MOSFET or bipolar transistor flip-flop
low density versions of MOSFETs
high density versions of the bipolar transistor flip-flop.
⇒ In a crystal
the frequencies of series and parallel resonance are equal
the frequency of series resonance is more than frequency of parallel resonance
the frequency of parallel resonance is more than frequency of series resonance
None of the above
⇒ In a normally biased N-P-N transistor the main current crossing the collector junction is
a drift current
a hole current
a diffusion current
same as the base current
⇒ Z transform is a non-linear operation.
TRUE
FALSE
⇒ Armstrong F.M. transmitter performs frequency multiplication in stages
to increase the overall S/N
for convenience
to reduce the bandwidth
to find the desired value of carrier frequency with frequency deviation
⇒ If X(z) = (1 - a)z^{-1}/[(1 - z^{-1})(1 - az^{-1})] and 1 < |z|, the final value of x_{k} is
0
1
∞
2
⇒ The system of the given fi
has two poles and one zero in left half plane
has two poles and one zero in right half plane
has two poles in left half plane and zero in right half plane
none of the above
⇒ Circular polarization
is useful in reducing depolarization effect on received wave
involves critical alignment of transmitting and receiving antenna
is useful in discrimination between reception of adjacent beams
none of the above
⇒ A rectangular waveguide measures 3 x 4.5 cm internally and has a 10 GHz signal propagated in it. Calculate the cut off frequency for dominant mode.
4 GHz
7.5 GHz
5 GHz
10 GHz
⇒ For input and later stages, BI-FET op-amp use
JFETs and MOSFETs respectively
MOSFETs and JFETs respectively
JFETs and BJTs respectively
BJTs and JFETs respectively
⇒ For an N-point FFT algorithm with N = 2^{m} which one of the following statements is TRUE?
It is not possible to construct a signal flow graph with both input and output in normal order
The number of butterflies in the m^{th} stage is N/m
In-place computation requires storage of only 2N node data
Computation of a butterfly requires only one complex multiplication
⇒ The two conductors of a transmission line carry equal current I in opposite direction. The force on each conductor is
proportional to I
proportional to I^{2}
proportional to distance between the lines
proportional to I^{3}
⇒ Loss angle of a good quality cable is about
1°
30°
70°
90°
⇒ Electrical contact materials used in switches, brushes and relays must possess
high thermal conductivity and high melting point
low thermal conductivity and low melting point
high thermal conductivity and low melting point
low thermal conductivity and high melting point
⇒ The material which has zero temperature coefficient of resistance is
manganin
porcelain
carbon
aluminium
⇒ An ideal voltage source can not be converted into an equivalent current source.
TRUE
FALSE
⇒ c(t) and m(t) are used to generate an AM signal. The modulation index of the generated AM signal is 0.5 then the quant
42737
42739
42738
42743
⇒ Laplace transform method enables us to find the response in
steady state
transient state
both steady and transient state
transient state provided forcing functions do not exist
⇒ The image frequency of a superheterodyne receiver is
created within the receiver itself
not rejected by IF tuned circuits
independent of the frequency of tuning
due to insufficient adjacent channel rejection