List of top Electronics and Communication Engineering Questions asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

In QAM, both ______ of a carrier frequency are varied.
The following multiplexer gives the logic gate of a/an _____
multiplexer gives the logic gate
How many minimum number of flip-flops are required to make a mod-479 counter?
_____ is used for the removal of SiO2 from desired regions such that the desired impurities can be diffused.
The characteristic equation of JK flip-flop is ______
The number of flip-flops used in a decade counter is _____
What is the radiation pattern of a point source antenna in free space?
The primary advantage of using a rectangular waveguide over other transmission line types is
Fundamental principle behind the propagation of light in dielectric waveguides and optical fibers is
The purpose of using a transmission line segment with a length of \( \lambda/4 \) in impedance matching is
Which of the following is not a source of magnetostatic fields?
In a transmission line with a characteristic impedance \( Z_0 \), what happens if the load impedance \( Z_L \) matches \( Z_0 \)?
Which one of the following field patterns represents a TEM wave traveling in the positive \( z \)-direction?
The curl of a vector field \( F \) is zero throughout a region of space. What does this imply about the behavior of \( F \)?
If an electromagnetic wave travels in the positive \( x \)-direction, and its electric field oscillates in the \( y \)-direction, what is the polarization of the wave?
Which of the following assertions accurately describes Gauss's theorem?
In which scenario would you expect the highest amount of refraction to occur when an electromagnetic wave passes from one medium to another?
Which theorem relates the line integral of a vector field over a closed curve to the surface integral of the curl of the field over the surface bounded by the curve?
Add the two numbers 87H and 79H in the 8085 microprocessors, then
Which of the following statement is correct with respect to Latch?
The output of each stage of flip-flop is connected to input of next stage flip-flop and the complement output of the last stage flip-flop is again connected to the input of first stage flip-flop then this is called
The midband gain of an amplifier is 100 and the lower cutoff frequency is 1kHz. The gain of the amplifier at a frequency of 20Hz is approximately
Match the following:
convert alternating current
How many users or voice channels are supported for each 200 KHz channel in GSM?
A TDMA system uses 25 MHz for the forward link, which is broken into radio channels of 200 kHz. If 8 speech channels are supported on a single radio channel, how many simultaneous users can be accommodated?