Title: elt106 ch 5 TYK
Course: Open ELT106 Fundamentals of DC/AC

Q: Which of the following are basic sources of electricity or electromotive force? Select all that apply.
- light
- polarization
- pressure
- friction
- magnetisim
A: light; pressure; friction; magnetisim

Q: To follow safety guidelines, when mixing acid and water
- always pour acid into water.
- always pour water into acid.
A: always pour acid into water.

Q: A voltaic cell is a way of converting chemical energy into electrical energy.
- True
- False
A: True

Q: A cell that cannot be recharged is a:
- one-way cell
- secondary cell.
- primary cell.
- None of the above.
A: primary cell.

Q: Polarization is a defect in a primary cell.
- True
- False
A: True

Q: Which of the following are advantages that silver oxide batteries have over other types of batteries.
- Their compact thin size.
- The wide range of operating temperatures.
- Their high energy density per unit volume
- All of the above are correct.
- None of the above are correct
A: Their compact thin size.

Q: Nickel-cadmium cell is a rechargeable dry cell.
- True
- False
A: True

Q: To prevent damage from complete discharge, a high voltage detection circuit is incorporated into devices that use NiMH batteries
- True
- False
A: False
Feedback: No, it's a low voltage detection circuit.

Q: In a parallel connection, the positive terminal of one cell is connected to the negative terminal

of the second cell.
- True
- False
A: False
Feedback: No, it's in a series connection.

Q: The capacity of a battery is its ability to produce a current over a certain period of time.
- True
- False
A: True

Q: H2SO4 is the composition of the electrolyte in a sealed nickel-cadmium battery.
- True
- False
A: False
Feedback: No, it's the composition of the electrolyte in a lead acid storage battery.

Q: Specific gravity:
- can be measured with a hydrometer
- can be used to determine the state of charge.
- is the weight of a liquid as it compares to water.
- All of the above.
A: All of the above.

Q: The piezoelectric effect relates to crystal distortion.
- True
- False
A: True