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- 1. Multiple-choice30 seconds1 pt
What do you call an energy converting system that transforms electrical energy into mechanical movement?
Electric motor
Electric field
Electric generator
Electric plasma
- 2. Multiple-choice30 seconds1 pt
Which of the situation below shows how a basic electric motor works?
The energy contained in the batteries of the vehicle is transformed into wheel rotation.
Electrical energy converted into blade rotation in the food processor and cut down food.
Both A and B
None of these
- 3. Multiple-choice1 minute1 pt
Which is the correct sequence in the operation of generator in the production of electricity in Hydroelectric Power Plant?
I. A turbine converts the kinetic energy of the falling water into mechanical energy.
II. Hydropower plants capture the energy of falling water to generate electricity.
III. Once an electrical current has been established, it is directed through copper wires to power machines and devices.
IV. The generator converts the mechanical energy from the turbine into electrical energy.
I,IV, II, III
II,I,IV, III
IV, I, III, II
III, II, IV, I
- 4. Multiple-choice30 seconds1 pt
He was credited for discovering that electric currents create magnetic fields, which was the first connection found between electricity and magnetism.
James Maxwell
Hans Christian Orsted
Michael Faraday
Alessandro Volta
- 5. Multiple-choice30 seconds1 pt
What will happen to the coiled wire in a model of an electric motor if the magnetic poles are repulsed and attracted?
The coil remains stable.
The coil fluctuates and converts electrical energy into chemical energy.
The coil stops and changes mechanical energy into electrical energy.
The coil rotates and changes electrical energy into mechanical energy.
- 6. Multiple-choice30 seconds1 pt
What are the three basic parts of an electric generator?
communicator, stator, and motor shaft
armature, brushes, and battery
stator, rotor, and commutator
battery, armature, and DC power supply
- 7. Multiple-choice30 seconds1 pt
Which of these is the commutator function in the generator?
Acts as a rectifier that converts AC voltage to DC voltage within the winding of the armature.
Diminish the energy loss caused by Eddy Current.
Offer magnetic fields where the coil is rotating.
Provides electricity to the generator.
- 8. Multiple-choice30 seconds1 pt
What do you call a device that generates electrical current when a wire coil is wrapped around an iron core and rotated close to a magnet?
car
magnet
motor
generator
- 9. Multiple-choice30 seconds1 pt
Which is NOT a distinctive attribute of an electrical generator?
Electric generator turns mechanical energy into electric energy
Electric generator turns electric power into mechanical energy.
It provides electricity
It is based upon the electromagnetic induction theory
- 10. Multiple-choice30 seconds1 pt
What do you call a huge wheel (associated with generators) that rotates when driven by water, wind, or steam?
Motor
Pipe
Turbine
Magnet
- 11. Multiple-choice30 seconds1 pt
Which of the following is a device that converts electrical energy into mechanical energy?`
electric bicycle
microwave oven
rice cooker
all of the above
- 12. Multiple-choice30 seconds1 pt
Which of the following is the correct explanation of the electrical motor operation?
Electric motor uses electricity
The operation is based on the principle of electromagnetism
The motor converts electric energy into mechanical energy
All of the above
- 13. Multiple-choice30 seconds1 pt
What do you call a device that transforms mechanical energy into electrical energy?
electrical charge
electrical motor
electrical generator
electrical current
- 14. Multiple-choice1 minute1 pt
Which is the correct sequence in the operation of simple motor?
I. Magnets placed near one another either attract or repel.
II. The attraction and repulsion causes the wire to jump.
III. Electric current starts to creep along wire; it creates a magnetic field all around it.
IV. Electrical energy converted to mechanical energy.
What do you call an energy converting system that transforms electrical energy into mechanical movement.
V. Temporary magnetic field interacts with the permanent magnet.
V, IV, II, II, I
III, V, I, II, IV
V, III, I, IV, III
III, II, IV, I, V
- 15. Multiple-choice30 seconds1 pt
Which two forces are required to operate with generators and electric motors?
electric and magnetic
electric and thermal
magnetic and radiant
magnetic and thermal
