Question { 26499 }

what is Active device and Passive device?

Answer

In Electronics, Active devices are those devices which has
some gain e.g. Amplifiers. The passive devices have no gain

Question { 4827 }

what is meant by CDI ?

Answer

It stands for Capacitive discharge Ignition system. It is
basically a capacitor which is used to avoid the sparking
and ultimately to avoid the damaging of contacts.

Question { 11001 }

why transformer capacity is called KVA and motor capacity
is called HP/KW?
Why transformer capacity cant call HP/KVA?

Answer

Transformer is a device which transform the power from its
primery to its secondary provided that the frequency and
power remains same (In ideal case the power will be same).
In transformer there is no changing of power factor so its
rating is described in VA.
But the motor is a device that converts the Electrical power
into Mechanical power. In motor applications we concerns
both with with electrical power as well as Mechanical power.
Kw is Electrical term and HP is usually used in Mechanical.
Hence this is the reason as per my knowledge.