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WorksheetsSA3 - Generator
Total questions: 20
Worksheet time: 20mins
What is the device that converts mechanical energy into electrical energy?
Steam turbine
Generator
Wind turbine
Electric motor
According to Faraday's law of electromagnetic induction, what determines the value of induced emf across a conductor?
Conductor's temperature
Conductor's material
Rate of change of flux linkage
Conductor's length
Which type of generator is also known as an alternator?
DC Generator
Asynchronous Generator
AC Generator
Synchronous Generator
What is the purpose of load shedding in an electrical system?
To increase plant loads
To trip the generators
To prevent equipment damage
To reduce electrical load
How can the output voltage of a generator be controlled?
By increasing the speed of rotation
By controlling the DC excitation current to the rotor
By adjusting the frequency
By changing the conductor material
Which type of generator is typically found in off-grid applications?
AC Generator
Synchronous Generator
Asynchronous Generator
DC Generator
What is the main difference between synchronous generators and asynchronous generators?
Excitation method
Frequency control
Speed
Size
What is the purpose of synchronizing generators in parallel operation?
To increase the output voltage
To control the frequency
To combine total power capacity
To change the phase sequence
Which instrument is used to indicate if the frequency of a generator is faster or slower during synchronization?
Synchroscope
Three-Lamps method
DC excitation current
Rotor speed control
What is the armature of a generator?
The prime mover of the generator
The load connected to the generator
The stationary part of the generator
The rotating part of the generator
Which type of generator is mainly used in power plants due to its high power generation capability?
DC Generator
Asynchronous Generator
AC Generator
Synchronous Generator
What is the role of the prime mover in a generator?
To control the output voltage
To convert electrical energy into mechanical energy
To regulate the frequency
To drive the generator
What is the function of slip rings in a generator?
To adjust the phase sequence
To collect the electricity produced in the rotating loop
To rectify the electricity
To control the frequency
Why are synchronous generators with rotating armature limited in their applications?
Due to high losses
Due to low power output
Due to complex operation
Due to high maintenance cost
What is the main difference between rotating field type and rotating armature type generators?
Location of armature and field
Frequency control
Excitation method
Size of the generator
What is the best energy chain for coal fired power plants?
chemical -> kinetic -> electrical
kinetic -> electrical
electrical -> chemical -> heat
kinetic -> chemical -> electrical
Which electrical generator has this energy chain?
kinetic -> electrical
wind
natural gas
nuclear
solar panel
What is formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field?
electromagnet
generator
magnet
electric motor
Motor or Generator?
Motor
Input: electrical
Output: mechanical
Generator
Input: electrical
Output: mechanical
Motor
Input: mechanical
Output: electrical
Generator
Input: mechanical
Output: electrical
Motor or Generator?
Motor
Input: mechanical
Output: electrical
Generator
Input: mechanical
Output: electrical
Motor:
Input: electrical
Output: mechanical
Generator
Input: electrical
Output: mechanical
