Electric

Electric

Course Name: Technology Quiz Number: 01 Teacher: Dr. Teri A. Hamill Teacher's Email: hamillt@nova.edu

Student Name: Student No: Student Email:

No. of Questions= 11
Pass mark is - 80 %.

You can press the Mark + Mail button at the bottom of the page to have the quiz marked and mailed.

1. AC electricity is in essence:

a) A chemical reaction

b) Whirling movement of protons

c) The movement of electrons

2. A difference between DC and AC current is:

a) The electron flow is in just one direction in DC current

b) Diodes are needed for DC current generators

c) You can never be shocked by DC current

3. DC current comes from

a) the power company, via outlets in the walls

b) batteries

4. The difference between a cell and a battery is:

a) A cell has a negative and a positive terminal

b) A battery has only a single cell

c) A battery is made up of cell(s)

5. A conductor:

a) Duh, is someone who drives a train

b) Has low resistance to electron flow

c) Has high resistance to electron flow

6. Capacitance is measured in:

a) ohms

b) mhos

c) farads

d) volts

e) watts

7. Current is:

a) the voltage divided by the resistance

b) the voltage times the amperage

c) the resistance times the capacitance

8. Electic shock occurs when:

a) The circuit is open

b) Current flows through a person

c) Stray voltage enters the atmosphere

d) Your child comes home wearing pink hair and an AC/DC t-shirt

9. When an appliance's plug has three prongs to it, the third prong is:

a) Used to prevent the plug from being inserted incorrectly

b) An extra positive terminal to allow 220 volt applications

c) Detached before the appliance is used

d) Connected to the appliance, and then to an infinite supply of electrons, so that it becomes the path of least resistance for any stray current

10. The outlet boxes in kitchens and bathrooms with the little "test" button:

a) Permit the homeowner to test whether or not the circuit is active

b) Are connected to what is in essence a mini-circuit breaker

c) Should never be used with a two-prong appliance, or else the chance of electric shock is increased

11. The purpose of fuses or circuit breakers is to guard against possible electric fire caused by:

a) overheating of the wires caused by excessive current

b) Resistive loading

c) Power surges in the electric supply

d) Drops in the circuit capacitance

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1.	AC electricity is in essence:

	a)	A chemical reaction
	b)	Whirling movement of protons
	c)	The movement of electrons


2.	A difference between DC and AC current is:

	a)	The electron flow is in just one direction in DC current
	b)	Diodes are needed for DC current generators
	c)	You can never be shocked by DC current


3.	DC current comes from

	a)	the power company, via outlets in the walls
	b)	batteries


4.	The difference between a cell and a battery is:

	a)	A cell has a negative and a positive terminal
	b)	A battery has only a single cell
	c)	A battery is made up of cell(s)


5.	A conductor:

	a)	Duh, is someone who drives a train
	b)	Has low resistance to electron flow
	c)	Has high resistance to electron flow


6.	Capacitance is measured in:

	a)	ohms
	b)	mhos
	c)	farads
	d)	volts
	e)	watts


7.	Current is:

	a)	the voltage divided by the resistance
	b)	the voltage times the amperage
	c)	the resistance times the capacitance


8.	Electic shock occurs when:

	a)	The circuit is open
	b)	Current flows through a person
	c)	Stray voltage enters the atmosphere
	d)	Your child comes home wearing pink hair and an AC/DC t-shirt


9.	When an appliance's plug has three prongs to it, the third prong is:

	a)	Used to prevent the plug from being inserted incorrectly
	b)	An extra positive terminal to allow 220 volt applications
	c)	Detached before the appliance is used
	d)	Connected to the appliance, and then to an infinite supply of electrons, so that it becomes the path of least resistance for any stray current


10.	The outlet boxes in kitchens and bathrooms with the little "test" button:

	a)	Permit the homeowner to test whether or not the circuit is active
	b)	Are connected to what is in essence a mini-circuit breaker
	c)	Should never be used with a two-prong appliance, or else the chance of electric shock is increased


11.	The purpose of fuses or circuit breakers is to guard against possible electric fire caused by:

	a)	overheating of the wires caused by excessive current
	b)	Resistive loading
	c)	Power surges in the electric supply
	d)	Drops in the circuit capacitance