Power system components and substations

Which of the following transmission line voltage levels in not available in Malaysia?

• 132 kV

• 275 kV

• 500 kV

• 765 kV

High voltage is used in transmission lines in order to

• Increase the voltage level

• Reduce the power loss

• Increase the power transmitted

• Reduce the load power consumption

What is the purpose of circuit breakers?

• Disconnect circuit under normal condition

• Break the circuit under normal condition

• Break the circuit under fault condition

• Connect circuit under abnormal condition

Which of the following components is not located in a substation?

• Power transformer

• Surge arrester

• Lightning arrester

• None of these

The component that is used to control the voltage or correct the power factor is

• Resistor

• Transformer

• Circuit breaker

• Capacitor

TNB standard transmission capacity and voltage transformation at main intake substation is

• 132/32kV

• 132/12kV

• 132/11kV

• 275/132kV

Main Switch Station reduces the voltage from higher to lower level before it goes to the customers.

• TRUE

• FALSE

Switchgear is a combination of electrical equipment such as circuit breakers, potential transformers, relays. fuses and current transformers.

• TRUE

• FALSE

The type of transformer at distribution system is called

• Testing transformer

• Step-up transformer

• Distribution transformer

• Potential transformer

What is the distribution network type that has many connections to other points of power supply?

• Loop network

• Radial network

• Point network

• Interconnected network