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Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to
| |
A. | 1 and 2 [Correct Answer] |
B. | 1, 2, 3 [Wrong Answer] |
C. | 2, 3 [Wrong Answer] |
D. | 1, 3 [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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⇒ A ring counter with 5 flip-flops will have __________ states.
5
10
32
Infinite
⇒ The circuit diagram shown in the figure consists of transistors
parallel connection
cascade connection
darlington connection
series connection
⇒ A single phase cycloconverter with centre tapped input transformer requires
2 thyristors
4 thyristors
8 thyristors
either 2 or 4 thyristors
⇒ The drain characteristics of JFET are drawn between
V_{GS} and V_{DS} for different values of drain current
drain current and V_{GS} for different values of V_{DS}
drain current and V_{DS} for different values of V_{GS}
drain current and V_{GS }for one value of V_{DS}
⇒ In a transmission line, losses due to dielectric heating are
proportional to voltage and inversely proportional to Z_{0}
proportional to voltage and proportional to Z_{0}
proportional to current and proportional to Z_{0}
proportional to current and inversely proportional to Z_{0}
⇒ Switching systems
are limited to small data networks
require additional lines
are not used in data system
improve the efficiency of data transfer
⇒ Auto correlation function
is an even function of t
is an odd function of t
may be an even or odd function of t
is both an odd and even function of t
⇒ A series circuit has R = 5 Ω and C = 10 μF. It is switched on to a 12 V dc battery at t = 0. The current in the circuit will be maximum
at t = RC
at t = ∞
at t = 0^{+}
none of the above
⇒ The output, V-I characteristics of an Enhancement type MOSFET has
only an ohmic region
only a saturation region
an ohmic region at low voltage value followed by a saturation region at higher voltages
an ohmic region at large voltage values preceded by a saturation region at lower voltages
⇒ 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)
⇒ A line is excited by a 100 V dc source. If reflection coefficients at both ends are 1 each then
there will be no oscillations on line
there will be only 1 or 2 oscillations on line
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⇒ The name modem is a contraction of terms modulator demodulator.
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FALSE
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⇒ If a_{ac} for transistor is 0.98 then β_{ac} is equal to
51
49
47
45
⇒ Logic pulser
generates short duration pulses
generates long duration pulses
generates sinusoidal voltage
generates ideal pulses
⇒ The angular location of poles depends on
undamped natural frequency
damping ratio
both (a) and (b)
neither (a) nor (b)
⇒ Value of 'K' for the system for which the system is stab
K < 1
K > 1
K < 2
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⇒ An iron specimen has µ_{r} = 1000 when B = 0.3 T. If B = 0.35 T, µ_{r}
will be 1000
will be less than 1000
will be more than 1000
may be more or less than 1000
⇒ In one's complement 8 bit representation 11111111 represents
0
0
1
-1
⇒ SCR turns of from conducting state to blocking state on
reducing gate current
reversing gate voltage
reducing anode current below holding current value
applying ac to the gate
⇒ For the given truth table, the correct Boolean expressio
XYZ + X YZ + X Y Z
X Y Z + XYZ + X YZ
X Y Z + XYZ + XY Z
XYZ + XYZ + XY Z
⇒ A circular sphere mile is the area of cross-section of a wire
having a diameter equal to 1 miles
having a radius equal to 1 miles
having a circumference equal to 1 miles
none of the above
⇒ For an ideal 3000 Hz channel, S/N ratio is
3
1.5
4
2
⇒ The light output of LED varies as (current)^{n}. The value of n is about
0.5
1
1.3
2.1
⇒ A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/f is constant. At 50 Hz, the speed is 1440 rpm. At 25 Hz, the speed is likely to be
about 1350 rpm
about 720 rpm
about 360 rpm
either (b) or (c)
⇒ In a hi-fi system the frequency response over the audio frequency range should be within
± 10 dB
5 dB
2 dB
1 dB
⇒ Which of the following transducers requires a high input impedance preamplifier for proper measurements?
Thermocouple
Piezoelectric
Thermistor
L.V.D.T
⇒ The noise figure of FET circuit is
independent of the quiescent point
dependent on the quiescent point only
dependent on the triggering mechanism
independent of all above
⇒ A retriggerable one shot is one which
can be triggered only once
has two quasi stable states
can not be retriggered till the complete pulse appears at output
can be retriggered while the output is being generated