Master official APPSC Assistant Executive Engineer previous years' solved question papers with comprehensive step-by-step derivations across Electric Circuits & Network Theory, Electromagnetic Fields, Electrical Machines, Power Systems (Transmission, Distribution & Protection), Control Systems, Electrical & Electronic Measurements, Power Electronics & Drives, and Analog & Digital Electronics.
Marking pattern: +1.00 positive, -0.33 negative marking (Official APPSC 1/3rd Negative Marking Scheme; 150 Questions, 150 Marks).
The ratings of a basic meter are $100\text{ mV}$, $1\text{ mA}$. The voltage range of this meter is to be extended to $1\text{ volt}$. The value of the series resistance required to be connected with the meter is
A transformer has hysteresis loss of $30\text{ W}$, at $240\text{ V}$, $60\text{ Hz}$. The hysteresis loss at $200\text{ V}$, $50\text{ Hz}$, will be
In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is
Synchronous generators are usually driven by
Synchronous motors generally have
A capacitor of $\frac{1}{2\pi}\text{ F}$ is connected in series with a $1\ \Omega$ resistance to a voltage source $1\text{ V}$, $2\pi\text{ Hz}$. The voltage drop across the capacitance would be
The differential equation governing a certain circuit is $RC\left(\frac{dv}{dt}\right) + v = \sqrt{2}E\cos\omega t$. The corresponding phasor equation is
A series generator can self excite
Commutator and brush arrangement in a dc motor is provided to
In the two wattmeter method of measuring power in a balanced three-phase circuit, the readings of two wattmeters are in the ratio of $1 : 2$. The circuit power factor is
Three impedances of $Z\ \Omega$ each are connected in delta. Their equivalent star impedance/phase will be
The function of a shunt in an ammeter is to
Loop tests in a cable cannot locate the
The controlling torque in gravity controlled meter is proportional to
Variation in dc excitation of a synchronous motor causes variation in
In a synchronous motor, squirrel cage winding is provided for making motor
A shaded pole single-phase induction motor can be used for
When a synchronous motor is started, the field winding is
A meter has a full scale deflection of $90^\circ$ at a current of $1\text{ A}$. The response of the meter is square-law. Assuming spring control, the current for a deflection of $45^\circ$ will be
A linear system with system function $H(s) = 1/s$ is excited with unit step input. The output for $t > 0\text{ (zero)}$ is given by
A voltage of $\sin\omega t$, $50\text{ Hz}$ is applied to a capacitor of $1\text{ F}$. The current in ampere at $t = 1/200\text{ s}$ is
Kirchhoff's current and voltage laws apply for
The starting torque developed in a split-phase 1-phase induction motor is directly related to the phase angle, $\alpha$ between the two winding currents by the relation
In a critically damped RLC series circuit, the time constant of the response on sudden constant excitation is
The illumination at various points on a horizontal surface illuminated by the same source varies as