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Permalloy is | |
A. | a variety of stainless steel [Wrong Answer] |
B. | a polymer [Wrong Answer] |
C. | a conon-ferrous alloy used in aircraft industry [Wrong Answer] |
D. | a nickel an iron alloy having high permeability [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Which camera tube has highest dark current?
Plumbicon
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⇒ Which one of the following is digital?
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⇒ For very low frequencies, log magnitude for the given figur
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Vidicon
Saticon
GCD imager
⇒ Which one of the following is digital?
Pulse code modulation
Pulse width modulation
Pulse frequency modulation
Pulse position modulation
⇒ For real and odd signals, the Fourier series coefficient a_{n} is
purely imaginary
purely real and even
purely imaginary and odd
purely real and odd
⇒ For very low frequencies, log magnitude for the given figur
0 dB
-3 dB
3 dB
10 dB
⇒ In an AM system, doubling of modulation index doubles the antenna current. The system is
single side band full carrier
vestigial side band
single side band suppressed carrier
double side band full carrier
⇒ In a CRO, the time base signal is applied to
X plates
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⇒ For a high pass filter, β = p in attenuation band.
TRUE
FALSE
⇒ If a signal band limited for f_{m} is sampled at a rate less than 2 f_{m} the reconstructed signal will be
smaller in amplitude
distorted
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Match the following:
List I | List II | ||
---|---|---|---|
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B. | Parabolic antenna | 2. | Very high directivity |
C. | Lens antenna | 3. | Moderate directivity |
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⇒ If f(t) = 1, F(jω) = 2p δ(ω).
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⇒ An 8 bit data is to be entered into a parallel in register. The number of clock pulses required is
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1
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
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n_{0}ω_{0} + 2pk for any arbitrary integer k
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Reason (R): The wall currents in a circular waveguide in TE_{Q1} mode are completely circumferential.
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
⇒ If the AF voltage is raised to 10 V, while the AM is dropped to 200 Hz, what is the deviation?
10 kHz
15 kHz
20 kHz
40 kHz
⇒ In a digital measuring device the input electrical signal is in the frequency range of dc to ac (50) Hz. It must be sampled at a rate of
f times/sec
0.5 f times/sec
0.25 f times/sec
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⇒ The function of a modulator is to
separate two frequencies
extract information from the carrier
amplify the audio frequency signal
impress the information on to a RF carrier
⇒ In telephone systems, load is expressed in the unit of
erlangs
decibels
bells
watts
⇒ Voltage V_{L} in the circuit when V_{s} < 0 where D is an ideal diode. (Take R_{1} = R_{s} = R_{L} = 1 &o
0
1
1.5
cannot find
⇒ Which of the following stage is not present in AM receiver as compared to FM receiver?
AM amplifier
Demodulator
Amplitude limiter
AF amplitude
⇒
Assertion (A): In an R-L circuit having low resistance, current lags the voltage by nearly 90°.
Reason (R): Power factor of a series RL circuit is R/Z.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
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⇒ If the number of information bits is m, the number of parity bits p in the Hamming code is given by equation
2^{p} = m + p + 1
2^{p} ≥ m + p + 1
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2
3
5
6
⇒ The gate width of a monostable multivibrator is given by
T = 1.1 RC
T = 0.693 RC
0.963 RC
T = 0.369 RC
⇒ The instruction
MVI A, 20
in 8085 meanscontents of memory location 20 are brought into the accumulator
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either (a) or (b)
neither (a) nor (b)
⇒ A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is
16
15
8
1