DC Generator Characteristics Quiz

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What is the function of a generator?

To convert electrical energy into mechanical energy

To store energy temporarily in the field

To provide signals to activate electronic control devices

To transfer mechanical energy into electrical energy (correct)

In a DC Generator, what is the function of the stator?

Converts mechanical energy into electrical energy

Stores energy temporarily in the field

The stationary part of the machine (correct)

Provides signals to activate electronic control devices

What does a Compound-wound generator refer to?

A type of generator with both series and shunt field windings (correct)

A generator that operates at very low power levels

A type of generator that converts mechanical energy into electrical energy in DC form

A generator that links an electrical energy system to another energy system

How is voltage regulation achieved in a DC Generator?

By adjusting the excitation or field current Signup and view all the answers

What is the purpose of parallel operation of DC generators?

To increase the efficiency of the generators Signup and view all the answers

Which factor is crucial for determining the efficiency of generators?

Ratio of output power to input power Signup and view all the answers

What is the purpose of the series field coils in a short-shunt compound generator?

To regulate the terminal voltage of the generator Signup and view all the answers

What is the main reason for connecting multiple smaller generators in parallel in a DC power plant, rather than using a single large generator?

To ensure continuity of service in case of a generator failure Signup and view all the answers

What is the relationship between the constant or rotational losses and the variable losses in a generator for maximum efficiency?

The constant or rotational losses should be made equal to the variable losses to achieve maximum efficiency Signup and view all the answers

What is the definition of voltage regulation in a DC generator?

The percentage rise in the terminal voltage of the generator when the load is removed Signup and view all the answers

Which of the following is a benefit of efficiently loading a generator in a DC power plant?

It reduces the electric power cost per kWh Signup and view all the answers

What is the purpose of the shunt field coils in a short-shunt compound generator?

To regulate the terminal voltage of the generator Signup and view all the answers

What is the primary advantage of parallel operation of generators?

Ability to perform routine or emergency operations while isolating affected generators Signup and view all the answers

Why might parallel operation of smaller generators be preferred over a single large unit?

A single large unit of desired capacity may not be available Signup and view all the answers

What is a potential consequence of paralleling a DC generator with reversed polarity?

Serious short-circuit and potential damage to the generator Signup and view all the answers

Which type of generator is more commonly operated in parallel?

AC generators Signup and view all the answers

What is the purpose of a compound-wound generator?

To improve voltage regulation Signup and view all the answers

What is a potential issue with paralleling generators that should be checked before paralleling?

Reversed polarity Signup and view all the answers

DC Generator Characteristics Quiz

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