Question { 9851 }

EARTH AND NEUTRAL ARE JOINTED OR NOT?

Answer

no! hum nahi mila sakte neutral or ground ko kunke neutral
ek path complete karne keliy hota hai aur ground hum safety
keliy istamaal karte hai jis mein buhut hi kam resistance
hoti hai ok

Question { Petronas, 50031 }

WHAT IS A BASIC DIFFERENCE BETWEEN THYRISTOR,TRIAC AND A
DIAC.AND WHAT R THERE APPLICATIONS?

Answer

Thyristor means is a 4 layer device with two terminals ,
the anode and the cathode. The main diff is the silicon
controlled rectifier.
The diac means it has two terminals A1 , A2. It conduction
occurs in a diac when the breakover voltage is reached with
either polarity across the two terminals.
The triac is like a diac with a gate terminal it's mean
three terminals. A triac can be turned on by a pulse of
gate current and does not require the breakover voltage to
initiate conduction.

Question { Bhel, 11787 }

what is inverter

Answer

Inverter is not just like dc power converts in to ac .
Inverter also change the frequency of which we gives it b/coz some time we need to run the motor some variable speed its also called vfd .