Energy, 2 part tariff, Fuse, MCB, Earthing, ELCB, RCCB

How much energy is consumed in Watt-sec (or Joules) when a 50 W light bulb is turned on for 10 minutes?

• 500 W-s or J

• 25 W-s or J

• 3000 W-s or J

• 30,000 W-s or J

How much energy is consumed each second when a 50 W lamp is turned ON?

• 50 W-s or J

• 500 W-s or J

• 3000 W-s or J

A Miniature Circuit Breaker (MCB) protects electrical circuits from,

• Over load

• Short circuit current

• Over current

• All of the above

Two part tariff is charged on what basis?

• a. Connected load

• b. Units consumed

• c. Maximum demand

• Both b and c

Fixed charges in 2 part tariff depends on

• Units consumed

• Maximum demand

• Connected load

In 2 part tariff, FAC stands for

• Fuel Adjustment Charges

• Future Adjustment Changes

• Former Adjustment Charges

Tariff is defined as

• Rate at which electricity is supplied to consumers

• Rate at which electrical equipment is purchased

• Duty imposed on exporting electrical equipment

Total electricity charges as per 2 part tariff =

• Fixed charges + Energy consumed charges + FAC

• Fixed charges + Energy charges

• Energy charges

Material used for Fuse wire should have the following characteristics

• Low melting point, high conductivity

• High melting point, low conductivity

• High resistance, low melting point

Fusing Factor is defined as the ratio between

• Maximum Fusing current & Rated current

• Minimum Fusing current & Rated current

• Maximum Fusing current & Rated voltage

• Minimum Fusing current & Rated voltage