Inside Video <br /> <br />1) Why ELCB cannot work if Neutral input of ELCB does not connect to ground? <br /> <br />2) What is the difference between MCB & MCCB, where it can be used? <br /> <br />3) Why in a three pin plug the earth pin is thicker and longer than the other pins? <br /> <br />4) Why Delta Star Transformers are used for Lighting Loads? <br /> <br />5) What are the advantages of star-delta starter with induction motor? <br /> <br />6) If one lamp connects between two phases it will glow or not? <br /> <br />7) What are HRC fuses and where it is used? <br /> <br />8) Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why? <br /> <br />9) What happen if we give 220 volts dc supply to bulb or tube light? <br /> <br />10) What is meant by knee point voltage? <br /> <br />11) What will happen if DC supply is given on the primary of a transformer? <br /> <br />12) Why humming sound occurred in HT transmission line? <br /> <br />13) How can we start-up the 40w tube light with 230v AC/DC without using any choke/Coil? <br /> <br />14) If 200w, 100 w and 60 w lamps connected in series with 230V AC , which lamp glow brighter? Each lamp voltage rating is 230V. <br /> <br />15) What is the difference between Electronic regulator and ordinary rheostat regulator for fans? <br /> <br /> <br />16) Which type of A.C motor is used in the fan? <br /> <br />17) What is the difference between synchronous generator and asynchronous generator? <br /> <br />18) What is the Polarization index value? <br /> <br />19) What happens if we connect a capacitor to a generator load? <br /> <br />20) Why the capacitors work on ac only? <br /> <br /> <br />Downloaad Link : http://sh.st/DIBQv <br /> <br /> <br />Email:-bharatribadiya@outlook.com
