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

The early effect in a bipolar junction transistor is caused by
How does a FET behave when the V-I characteristics are to the left of pinch off for an n-channel FET?
The direction of the diffusion current depends on
Match items in Group-I with items in Group-II, most suitably.
Spontaneous emission
A silicon PN junction diode is forward biased with a constant current at room temperature carrying a constant current of 1 mA. When the temperature is increased by 10°C, the forward bias voltage across the PN junction is approximately equal to
In the circuit shown below, the Zener diode is ideal and Zener voltage is 6V. The output voltage \( V_o \) (in volts) is
Zener diode is ideal and Zener voltage is 6V
In MOSFET fabrication, the channel length is defined during the process of
In superposition theorem, when we consider the effect of one voltage source, all the other current sources are
The current through a series RL circuit is \( \frac{1}{4} e^{-\frac{3}{4} t} \) when excited by a unit impulse voltage. The values of R and L are respectively
If \( E_p \) (Fermi energy level) \(>E_f \) (intrinsic Fermi energy level), then the type of semiconductor is
Which process of the Electron-hole pair is responsible for emitting of light?
Among the four networks, N1, N2, N3, and N4, given in the following figure, the networks having identical driving point function are
four networks, N1, N2, N3, and N4,
The 2-port admittance matrix of the circuit shown is given by
2-port admittance matrix
The mesh current method
(I) Works with both planar and non-planar circuits
(II) Uses Kirchhoff’s voltage law
Which of the above is correct?
If there are 5 branches and 4 nodes in the graph, then the number of mesh equations that can be formed are?
The current waveform \(i(t)\) in a pure resistor of 20 \( \Omega \) is as shown in the figure below, then the power dissipated in the resistor is
waveform i(t) in a pure resistor of 20 Ω
In the following figure, \(C_1\) and \(C_2\) are ideal capacitors. \(C_1\) has been charged to 12V before the ideal switch \(S\) is closed at \(t = 0\). The current \(i(t)\) for all \(t\) is
C1 and C2 are ideal capacitors. C1
Identify the Y equivalent of a network of the circuit shown in Figure below.