Prepare for AVNL Executive CBT with official questions covering Electrical Machines, Industrial Power Distribution, Drives & Traction Systems, Switchgear & Relays, Power Electronics, and Control Instrumentation.
Marking scheme: +1.00 positive, 0.00 negative marking (AVNL CBT Pattern).
What is the physical significance of the vector magnetic potential?
What does the circle diagram of an induction motor primarily represent?
If event A and event B are independent, what is $P(A/B)$?
At low power factor conditions, what is the main cause of measurement error in an electrodynamometer wattmeter?
A digital circuit requires a 4-to-16 line decoder. The available integrated circuits are a 1-to-4 demultiplexer, and two 2-to-4 decoders. What is the minimum number of these components required to construct the 4-to-16 decoder, assuming additional logic gates are available?
Which of the following best states Cauchy's integral formula for a function analytic inside and on a simple closed curve C containing point a?
For a second-order underdamped system, the peak overshoot $M_p$ is given by:
Match the following quantities with their corresponding expressions in reference to EDMI torques:
| Quantity | Expression |
|---|---|
| i. DC torque | A. $\theta \propto T_d \propto P$ |
| ii. AC instantaneous torque | B. $T_d \propto VI \cos\phi$ |
| iii. AC average torque | C. $T_d(t) \propto \sin(\omega t) \cdot \sin(\omega t + \phi)$ |
| iv. Deflection | D. $T_d \propto I^2$ |
In the context of parallel operation of alternators, an infinite bus-bar has _____ regardless of the load variations.
Which of the following principles form(s) the basis of the nodal analysis method in electrical circuits?
For a right-sided sequence (causal sequence), the ROC of its Z-transform is:
In a successive approximation type DVM, what determines the sequence in which the digital bits are tested and either retained or discarded?
Which method is generally used to find the particular integral (P.I.) of the linear differential equation with constant coefficients when the right-hand side is a function like $\sin(ax)$ or $\cos(ax)$?
Which components are generally used to realise the Log-Amplifier?
Which of the following operation results in the rightward shift in the s-domain of the signal during the Laplace transform?
Resonance in a parallel RLC circuit occurs when:
Express the signal $x(t) = 5$ for $2 \le t \le 7$ and $x(t) = 0$ elsewhere, using unit step functions.
Which of the following is a property of the State Transition Matrix (STM) $\Phi(t)$ for a time-invariant system?