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

Which of the following is commercially used in gas blast Circuit breakers?
An induction motor will develop maximum torque when the phase difference between the stator flux and the rotor current is_______.
A transformer operates most efficiently at \( \frac{3}{4} \) full-load. Its iron loss (\(P_i\)) and full-load copper loss (\(P_c\)) are related as _______.
Two transformers of identical voltages but of different capacities are operating in parallel. For satisfactory load sharing _______.
Dummy coils may be needed in a DC wave winding _______.
The ‘Equal Area Criterion’ for the determination of transient stability of the synchronous machine connected to an infinite bus ________.
The only disadvantage of field control method for controlling the speed of a DC shunt motor is that it _______.
The purpose of connecting resistance in the rotor circuit of slip ring induction motor is _______.
When pull-out torque occurs in a synchronous motor, the poles of the rotor are _______.
Crawling of a motor results from_______.
The transfer function of a phase-lead compensator is given by: $\frac{1 + 3Ts}{1 + Ts}$, $T>0$. The maximum phase shift provided is _______.
The presence of transportation lag in the forward path of a closed-loop control system _______.
The phase cross-over frequency of the transfer function $G(s) = \frac{100}{(s+1)^2}$ in rad/s is _______.
The gain at the breakaway point of the root locus of a unity feedback system with open-loop transfer function $G(s) = \frac{K}{(s-1)(s-4)}$ is _______.
The voltage regulation of alternator at lagging power factor will be _______.
If $X(z) = \frac{1}{1 - z^{-1}}$ with $|z|>1$, then what is the corresponding $x(n)$?
The input-output relationship of a linear system is given by _______.
The steady state error due to a ramp input for a type two system is equal to _______.
Frequency domain analysis is preferred when dealing with systems having input as _______.
What is the value of total electric flux coming out of a closed surface?
A 10 V range Voltmeter is rated for 50 $\mu$A full-scale current. The total resistance of the voltmeter is_______.
The $Z_{22}$ - Parameter of a Two-port network is known as _______.
The power factor at resonance in a parallel R-L-C circuit is_______.
A DC voltage $V$ is applied at time $t = 0$ to a series circuit consisting of resistor $R$ and capacitor $C$. The current in the circuit at time $t$ is_______.
A machine produces 0, 1 or 2 defective items in a day with probabilities of \( \frac{1}{4}, \frac{1}{2}, \frac{1}{4} \) respectively. Then, the standard deviation of the number of defective items produced by the machine in a day is ............