Power System Components and Representation Quiz

What is the main function of a transformer?

• Change the voltage level of an AC electrical circuit

• Regulate the frequency of an electrical circuit

• Convert the voltage level of a DC electrical circuit

• Control the flow of current in an electrical circuit

How is a transformer represented in a circuit diagram?

• A circle with a dot in the center

• Two coils with a line connecting them

• A triangle with a wavy line inside

• A single straight line

What are the basic components of a generator?

• Battery, radiator, transmission

• Spark plug, carburetor, muffler

• Tire, steering wheel, brake pedal

• Engine, alternator, fuel system, voltage regulator, cooling and exhaust systems, lubrication system

What is the purpose of the transmission line in a power system?

• To transport water from reservoirs to treatment plants.

• To transmit electrical power from generating stations to distribution substations.

• To provide internet and cable services to households.

• To carry natural gas from extraction sites to storage facilities.

Explain the concept of transformer turns ratio.

• The transformer turns ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding of a transformer.

• The transformer turns ratio is the ratio of the number of turns in the primary winding to the number of turns in the load of a transformer.

• The transformer turns ratio is the ratio of the number of turns in the secondary winding to the number of turns in the core of a transformer.

• The transformer turns ratio is the ratio of the number of turns in the primary winding to the number of turns in the tertiary winding of a transformer.

Name three essential components of a generator.

• battery, radiator, exhaust system

• turbine, gearbox, cooling system

• cylinder head, suspension, transmission

• engine, alternator, fuel system

How is the resistance of a transmission line represented in a model?

• Inductive resistance

• Series resistance

• Parallel resistance

• Capacitive resistance

What is the significance of the reactance in a transmission line model?

• It has no significance in a transmission line model

• It represents the speed of the alternating current

• It only affects direct current

• It represents the opposition to the flow of alternating current.

Describe the concept of per unit impedance in transmission line modeling.

• Normalization of impedance to a common base

• Calculation of impedance in DC circuits

• Conversion of impedance to frequency domain

• Measurement of impedance in parallel circuits

How is the voltage regulation of a transformer calculated?

• By measuring the weight of the transformer

• By counting the number of windings in the transformer

• By using the formula: (V_no-load - V_full-load) / V_full-load * 100%

• By calculating the age of the transformer