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 outer cage winding in a double cage induction motor has
A 3-phase slip-ring induction motor can run at its synchronous speed when
A perfect diffuser surface is one that
Sensitivity of an instrument is independent of
A shaded pole single-phase induction motor always runs in
Which of the following is absolute instrument?
In conversion of 3-phase to 2-phase supply with T-connection, the transformation ratio of the teaser will be _____ times of that of main transformer.
The emf induced in an alternator has fundamental component of $1000\text{ V}$ and third harmonic component of $90\text{ V}$. The value of net emf is
For high starting torque, the most suitable type of 3-phase induction motor is
When the supply voltage to an induction motor is reduced by $10\%$, the maximum torque will decrease by approximately
The voltage regulation of alternator delivering equal amount of active and leading reactive power to the load is
In a 3-phase, star connected alternator, a field current of $5\text{ A}$ gave open-circuit voltage of $415\text{ V}$ and short-circuit current of $10\text{ A}$. The value of synchronous impedance is
The magnetizing current in a transformer is rich in
Tappings of a transformer are provided
Which of the following methods is employed for starting a 3-phase synchronous motor?
The efficiency of a properly designed synchronous machine is of the order of
A synchronous motor may fail to pull into synchronism owing to
In an induction motor, skewing of rotor bars reduces
In a squirrel cage induction motor, high starting torque is achieved by using
The type of rotor preferred for alternators driven by steam turbine is
The simplest method of shifting load from one shunt generator to the other running in parallel consists in
The instruments according to applications may be classified as
If a shunt generator delivers 100 A at 200 V, and the resistance of the shunt field and armature are $100\;\Omega$ and $0.01\;\Omega$ respectively, the generated emf will be
The straight line characteristic drawn tangent to the initial portions of OCC and passing through origin is called
At full-load condition in a synchronous motor, the phasor relation between (per phase) terminal voltage V and induced emf E is