Electrical Systems - Worksheet #1

Define EMF

It is the electromotive force (EMF), or the push or pressure from one end of the conductor to the other, which moves the electrons

What are the two types of batteries used in the aviation industry?

a. Lead acid battery b. Ni-Cad battery

What are the five ways in which energy can be converted into electricity?

a. Thermal b. Solar c. Pressure d. Chemical e. Magnetism

The unit of electrical pressure is the __________.

volt

The unit of electrical power is the __________.

watt

Find the amount of current that 24 volts can force through a resistance of 144 ohms.

.166 amps

Find the amount of power used when an amp is being forced through 16 ohms of resistance.

16 watts

Find the voltage needed to produce 100 watts of power when 6 amps are flowing.

16.6 volts

Find the electrical power equivalent to 6 horsepower.

447 watts

Find the electrical power required to produce 6 horsepower if the motor is 75% efficient.

5,968 watts

Find the amount of resistance in a circuit in which 100 volts is producing 200 watts of power.

50 ohms

Find the voltage needed to produce 100 watts of power when the resistance is 25 ohms.

50 volts

Find the amount of current that must flow under a pressure of 6 volts to produce 48 watts of power.

8 amps

What is the equation used to find resistance?

E/I = R

What is the equation used to find amperes?

E/R = I

What is the equation used to find power?

I x E = W

What is the equation used to find volts?

I x Ω = E

The unit of electrical current is the __________.

ampere

The unit of electrical resistance is the __________.

ohm

Find the amount of current needed to produce 60 watts of power in a circuit having a resistance of 20 ohms.

1.732 amps

Find the amount of power produced when 120 volts are applied to a resistance of 6 ohms.

2,400 watts

Find the voltage needed to force 10 amps through a resistance of 20 ohms.

200 volts

Find the amount of resistance needed for 16 amps of current to produce 800 watts of power.

3.125 ohms

Thermal runaway can result in what?

A rise in temperature and a possible fire and/or explosion

Find the amount of power developed when 24 volts forces 6 amps to flow in a circuit.

144 watts

What is the difference between A.C. and D.C.?

A.C. is: Alternating current that is continually reversing D.C. is: Direct current moving in one direction

Batteries are generally mounted inside what?

Battery box in the nacelle