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The phase difference (jω - p_{1} ) | |
A. | phasor directed from p_{1} to jω [Correct Answer] |
B. | phasor directed from origin to p_{1} [Wrong Answer] |
C. | phasor directed from origin to jω point [Wrong Answer] |
D. | phasor directed from jω to p_{1} [Wrong Answer] |
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Explanation:-
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⇒ TE_{10} mode of propagation of electromagnetic energy in waveguides can be thought of as
three TEM waves travelling along length of wave-guide
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One TEM wave travelling along the length of wave guide and two TEM waves
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⇒ What are the counting stages (Q_{1}, Q_{2}) for the counter shown in the figure be
11, 10, 00, 11, 10, ...
01, 10, 11, 00, 10, ...
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the number of free electrons increases
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the number of free electrons and holes increase but not by the same amount
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O'Brune
R. Richards
Bott and Duffin
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-a
-a^{2}
a
-1
⇒ A + (B . C) =
A . B + C
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A
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⇒ For a depletion type NMOS, V_{p} = - 4 volts. For V_{GS} = 0, 1_{D} = 16 mA in the pinch off region of V_{DS}. For V_{GS} = - 2, the value of I_{D} in the pinch off region of V_{DS} is given by
64 mA
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lobe switching
monopulse
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conical scanning
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UJT with N-type base
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a tapped inductor
an inductor and two capacitors
both (a) and (b)
either (a) or (b)
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has very high magnitude and very long duration
has very high magnitude and very small duration
has very high magnitude and very small duration and can be positive or negative
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smallest piece of electronic hardware
a drilling tool
an abbreviation for binary digit
the smallest number
⇒ Which of the following integer expressions is correct in Pascal?
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Log-periodic
Parabolic
Conical
All of the above
⇒ For a BJT if β = 50, I_{CEO} = 3 μA and I_{C} = 1.2 mA then I_{B}
24 μA
23 μA
20 μA
10 μA
⇒ The PCM signal shown below uses amplitude level of +1 volt and -1 volt to represent binary symbol 0 and 1 respectively. Each code word consists of 4 bits. The sampled version of analog signal from which this PCM signal is derived
EB596
CD231
DA495
25B6A
⇒ In case of low level amplitude modulation system, the amplifiers following the modulated stage must be
class C amplifiers
linear devices
non-linear devices
harmonic devices
⇒ When narrow current pulses drive a high Q resonant circuit the voltage across the circuit looks like
narrow pulses
half sine wave
almost sine wave
either (a) or (b)
⇒ If the differential voltage gain and the common mode voltage gain of a differential amplifier are 48 dB and 2 dB respectively, then its common mode rejection ratio is
23 dB
25 dB
46 dB
50 dB
⇒ The equivalent inductance seen at terminals A -
14 H
20 H
10 H
4 H
⇒ The signals in 8086 are in maximum mode when
MN / MX pin is tied to V_{cc }
MN / MX Pin is grounded
MN / Mx pin is left open
none of the above
⇒ A piece of iron is placed in a magnetic field
the magnetic field will not be affected
the magnetic lines of force will bend to pass through the piece
the magnetic lines of force will bend away from the piece
any of the above depending on type of iron
⇒ Pre-emphasis and De-emphasis is done by using R-C circuit.
TRUE
FALSE
⇒ The correct sequence of events to improve system stability is
insert derivative action, use negative feedback, reduce gain
reduce gain, use negative feedback, insert derivative action
reduce gain, insert derivative feedback, use negative feed back
use negative feedback, reduce gain, insert derivative action
⇒ If we need a device to shut off a few ampere current in a few nano seconds, the proper devices is
VMOS
CMOS
BJT
UJT