What is difference between potentiometer and rheostat?
Latest Answer: The difference between potentiometer and rheostat is that the potentiometer can be used for high range of voltage and current but the rheostat cannot be used for high range of voltage or current. Size of the potentiometer is large, rheostat is less.byS.V.Vijayaraj ...
Why are we employing star type transformer at transmission end and delta type transformer at receiving end?
Latest Answer: Delta star transformer used in distribution purpose because of earthfault on star side do no reflect on delta side of winding. Zero phase current is eleminated in delta side of transformer and another reason for delta winding line current = 1.732 * Phase ...
What is the flyback convertor?
Latest Answer: skin effect is the nature of the Alternating current, ie, the current will be distributed in a conductor and will flow more on the surface(skin) of the conductor than at the core this effect is called skin effect. this is mainly due to the eddy currents. ...
What is the purpose of Q-point in transistor?
Latest Answer: The operating point of a device, also known as bias point or quiescent point (or simply Q-point), is the DC voltage and/or current which, when applied to a device, causes it to operate in a certain desired fashion. The term is normally used in connection ...
What is the purpose of coupling capacitor?
Latest Answer: Because capacitors pass AC but block DC signals (when charged up to the applied dc voltage), they are often used to separate the AC and DC components of a signal. This method is known as AC coupling or "capacitive coupling". Here, a large value ...
Why we cannot use the capacitive load?
Latest Answer: capacitive load means a load with leading power factor which is very rare in electrical equipment.though syncronous motor is used as a capacitive load. ...
Whats happens when we give DC to a induction motor
Latest Answer: In dc there is no rotating magnetic flux which is required to rotate ac motor. if we apply dc to ac motor, it may burn. ...
What is Magnetic Levitation ?How MAGLEV (Trains based on Magnetic Levitation) works ?
Latest Answer: Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. But train operating on Magnetic levitation is unknown to me. ...
Latest Answer: Control Panels literally help in controlling power supplied. It helps in protection and cntrols the various CBs and other protection Equipments. It hac Current relays etc to sense the current.I also helps to pinpoint the location of faults in feeders. ...
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