COMMERCIAL WIRING 2 - Quiz

1) Which metal is used to make contact points of thermostat?

Copper Silver Aluminium Brass

2) What is the property of heating element used in electrical heating appliances?

Low co efficient of expansion Low specific resistance Low mechanical strength Low voltage withstanding

3) Which is the permissible voltage drop in declared voltage supply to HT consumer as per IE rule?

Not more than 5% Not more than 8% Not more than 10% Not more than 12%

4) Which wiring system is suitable for high rise buildings?

Looping out from switches Distribution system Ring main system Tree system

5) Which type of distribution is suitable for commercial wiring of multistoried flats?

Looping out with junction Looping out with swit Bus chamber Raising mains