Electronics and Communication Engineering [ Question No: 1 To 20 ] :
The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is
A single phase half wave converter is feeding a resistive load. Just before triggering, the voltage across thyristor is
In satellite communication, highly directional antennas are used to
The echo heard by a telephone user on a satellite channel can be removed by using
Space communication links are being increasingly moved into Ka-band (200-30 GHz) because it
Point out the false statement.
Launching of geostationary experimental communication satellite has helped India to gain experience in
For global communication, the number of satellites needed is
Power received from Sun per m2 surface area of a geosynchronous satellite in nearly __________ watt.
India's first domestic geostationary satellite 1NSAT-IA was launched on 10th April 1982 from
If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver
An unmodulated voltage 10 V effective is applied to a dioxide detector in which load resistance is 4 x 10-5 ohms. A micrometer shows that the rectified DC current in this resistance is 30 A. The input resistance of the detector is
Most popular IF for receivers tuning to 540 to 1650 kHz is
In a second order system, the time constant t of exponential envelopes depends
Assertion (A): In root locus the breakaway and break in points either lie on real axis or occur in complex conjugate pairs.
Reason (R): All root locus asymptotes intersect on real axis.
The gain of an FET amplifier can be changed by changing
In following figure find VDSQ by assuming gate current is negligible for the p-channel JFET. (if IDQ = - 6 mA, RS = 0, VDD = -18 V, RD = 2 kΩ, IDSS = - 10 mA, IPO = - 3 V)
An RC series circuit is charged by a voltage E. After a long time the battery is removed and a short circuit is placed across R-C. Then
The driving-point impedance Z(s) of a network has a pole-zero locations as shown in the figure. If Z(0) = 3, then Z (s) is
If ∈r' and ∈r" are the real and imaginary parts of complex dielectric constant ∈r, and δ is the loss angle. Then
There is no hysteresis phenomenon is any dielectric material.
-6 V.
while in question Z(0) = 3