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Synchronous Generator or Alternator is an electromechanical energy conversion machine that converts mechanical power into AC electrical power

Auto transformer is a special type of transformer in which primary and secondary winding are connected magnetically as well as electrically.

What is a photodiode? - is a special form of light-sensitive PN junction diode that converts light energy into electrical energy.

CRO (Cathode Ray Oscilloscope) block diagram consists of 1) CRT (Cathode Ray Tube 2) Power/Supply Circuitry 3) Amplifiers circuitry

Negative feedback Inverting Amplifier has voltage gain A= - Rf / Rin. Negative sign indicates output voltage is phase shift by 180°.

The Zener diode is a special type of diode that is heavily doped, designed to operate at breakdown voltage in reverse bias condition.

Slew Rate definition is "The rate at which output changes as input changes". The units for slew rate is V/μsec. Formula is S =dVo /dt.

Star Connection can be transformed into equivalent delta connection by using star to delta conversion technique and vise versa.

Depending on power delivering/absorbing capability electrical circuit elements are classified as Active components and Passive elements.

RC Series circuit and parallel circuit are electrical circuits formed by the interconnection of resistor and capacitor across the source.

Ability to allow flow of electricity is conductance and conductivity is rate at which conductor allows flow of electricity through it.

For finding current through circuit elements in a parallel circuit (known as current divider circuit) , we use the current division rule.

Superposition Theorem states that response of element when all sources are active = sum of responses caused when one source acting at a time.

Load Flow Analysis mainly concentrates on voltages (magnitude and phase angle) at various buses and power flow in a transmission system.

corona effect is "Phenomenon of appearance of luminous violet glow around conductor due to ionization of air, producing hissing/cracking noise

SF6 circuit breaker working is like piston mechnism using SF6 gas which is capable of breaking the circuit under abnormal condition.

There are two types of voltage sensor. One is a resistive type voltage sensor and another one is a capacitive type voltage sensor.