Electricity Quiz

What are the hazards of electricity mentioned in the text?

• D. All of the above

• C. Carelessness and unsafe operating procedures

• B. Lack of maintenance and checks

• A. Ignorance and lack of earthing

What steps should be taken if a person is shocked or burned by electricity?

• D. Break the contact of the victim without endangering yourself

• C. Start CPR immediately if victim stopped breathing

• B. Touch the victim with bare hands

• A. Turn on the supply

What is the formula for Ohm's Law?

• D. V=230V

• C. R=VI

• B. I=VR

• A. V=I×R

What are the two types of power sources mentioned in the text?

• C. AC and CC

• B. DC and AC

• A. AC and BC

• D. DC and BC

Where does the electricity supply for the vast majority of electrical installations come from?

• D. Batteries

• C. Solar Panels

• A. Power Stations

• B. Windmills

What is the function of a transformer in the transmission of electricity?

• C. Both A and B

• B. Reduce voltage to a lower value

• A. Raise voltage to a higher value

• D. None of the above

What is the purpose of earthing in an electrical installation?

• A. To increase the voltage of live conductors

• C. To reduce the resistance of the circuit

• B. To prevent the potential of live conductors rising above the safe value

• D. To decrease the current flow

What is the function of a Consumer Unit in the supply intake equipment?

• D. Disconnect the circuit when the current between the phase and neutral conductors are not balanced

• A. For Overcurrent Protection

• C. A means of isolation and switching

• B. Used to register energy consumption

What is the purpose of a Dimmer Relay Switch in home automation systems?

• D. To save energy

• A. To control lightings

• B. To monitor security

• C. To detect fire and smoke

What are the benefits of home automation systems mentioned in the text?

• B. Simple Handling

• D. All of the above

• A. High Comfort

• C. Reducing operating expenses