EEE interview question answer part-1

Here is some common question for a interviewer [EEE] .....

1. Number of electron charge for 1 coulomb = ?

• 1 coulomb = 6.25 X 10¹⁸ C

1. 1 MW = ____ KVA

• 1000 kVA

1. What is the percentage of gold tolerance for a resistor ?

• 5%

1. What is the unit for magnetic flux density ?

•  we-bar

1. 25kVAR / 415volt = ?

• 54.34 A

1. What is pulse ?

• It is the combination of current, voltage and friction in nano second

1. What is the symbol for Time constant ?

• 𝜏 [tou]

1. What is  Ohms Law ?

• Ohm's law expresses that the electrical flow (I) streaming in a circuit is relative to the voltage (V) and contrarily corresponding to the obstruction (R). Along these lines, if the voltage is expanded, the current will increment gave the obstruction of the circuit doesn't change.

1. In Delta I_L = ?
   

• √3I_P

1. What is the resistivity of copper ?

• 0.0171 Ohm

1. What is the melting temperature for copper ?

• 1,085 °C