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1.

This phasor diagram for:

a)

R

b)

L

c)

C

d)

X

2.

This phasor diagram for:

a)

R

b)

L

c)

C

d)

X

3.

This equations for the:

a)

AC circuits only with R

b)

AC circuits only with L

c)

AC circuits only with C

4.

In a series circuit current must be

a)

constant for each element

b)

cosine graph in all 3 components

c)

different for each element

5.

Write an equation that solves for the impedance, $Z_{total}$ , of this series circuit.

a)

$Z_{total}=\sqrt{R^2+X^2}$

b)

$Z_{total}=\sqrt{R^2-X^2}$

c)

$Z_{total_{ }}=R^2+X^2$

d)

$Z_{total}=R^2-X^2$

6.

What is the total (equivalent) inductance in the diagram as shown?

a)

250 mH

b)

2.05 mH

c)

2.05 μH

7.

Which of the transposed reactance formulae is incorrect?

a)

b)

c)

d)

8.

Formula for inductive capacitance is...

a)

$\frac{1}{2\pi fC}$

b)

$\frac{1}{2\pi fL}$

c)

It does not exist

d)

$2\pi fC$

9.

The formula to find X_Cis

a)

$\frac{1}{2\pi fC}$

b)

$2\pi fC$

c)

$\frac{1}{2}\pi fC$

d)

$\omega fC$

10.

Impedance is

a)

Z = R + j(X_L - X_C)

b)

Z = R + j(X_L + X_C)

c)

Z = R + jX_L - jX_C

d)

Z = R + jX_L + jX_C

11.

Déterminez l'impédance du circuit

a)

3.39k

b)

73.6

c)

283m

d)

4.25

e)

3.35k

12.

Déterminez le facteur de puissance

a)

3.39k

b)

73.6

c)

283m

d)

4.25

e)

3.35k

13.

wood is a _____?

a)

conductor

b)

insulator

14.

water is a______?

a)

conductor

b)

insulator

15.

What kind of circuit is this?

a)

series

b)

parallel

16.

this circuit is .....?

a)

open

b)

parallel

c)

closed

d)

The cutest little circuit evah!

17.

Silver is a _____?

a)

insulator

b)

conductor

18.

This image represents what type of circuit?

a)

open

b)

closed

c)

series

d)

parallel

19.

Seleccione la formula de la Ley de Ohm

a)

$P=R\times I$

b)

$J=\frac{I}{s}$

c)

$U=R\times I$

d)

$P=I^2\ \times\ R$

e)

$I=\frac{R}{U}$

20.

If you replace the paper clip with a plastic spoon, what happens?

a)

The bulb doesn't light

b)

The bulb is dimmer

c)

The wires get hot

d)

There is no change

21.

this is the symbol for a _____?

a)

switch

b)

light

c)

battery

d)

wires

22.

If the electric circuit is CLOSED, the switch is _______.

a)

ON

b)

OFF

23.

When a circuit is closed, the load is _____________?

a)

On

b)

Off

24.

When a circuit is open, the circuit is _________?

a)

On

b)

Off

25.

Which is NOT a good conductor?

a)

silver

b)

copper

c)

iron

d)

plastic

26.

Which is NOT a good insulator?

a)

silver

b)

plastic

c)

glass

d)

rubber

27.

What is a material that allows energy to pass through easily?

a)

parallel circuit

b)

rubber band

c)

conductor

d)

electron

28.

What is a material that resists, or does NOT allow, energy to flow through?

a)

circuit

b)

insulator

c)

series

d)

conductor

29.

a)

Circuit is open

b)

Circuit is closed

c)

circuit has a complete path for electricity to flow

d)

This doesn't have to do with a circuit

30.

The on switch shows

a)

An open circuit where electricity can flow

b)

A closed circuit that is also called complete

c)

not related to circuits

d)

An incomplete circuit that does not allow electricity to flow

31.

Which of the following can work as an energy source?

a)

Battery

b)

Light bulb

c)

Wire

d)

All of them

32.

The useful power required for driving the motor or lighting the bulb is represented in:

a)

VAR

b)

Volt-Amperes

c)

Watts

33.

How many types of power factor?

a)

4

b)

3

c)

2

d)

1

34.

ค่าความเร็วเชิงมุมหรือ ω มีสูตรคือ

a)

2πr

b)

1/2πr

c)

2πf

d)

1/2πr

35.

หน่วยของค่าความต้านทานรวมหรืออิมพีแดนซ์ (Z) คืออะไร

a)

volt

b)

ampere

c)

Ohm

d)

rad/s

36.

หน่วยของค่าความเร็วเชิงมุม (ω) คืออะไร

a)

rad/s

b)

rad²/s

c)

ohm

d)

volt

37.

ค่าความต้านทานในตัวเหนี่ยวนำหรือ X_Lหาได้จากสูตรใด

a)

$\frac{1}{2\pi fL}$

b)

$2\pi fC$

c)

$\frac{1}{2\pi fC}$

d)

$2\pi fL$

38.

ค่าความต้านทานในตัวเหนี่ยวนำหรือ $X_C$ หาได้จากสูตรใด

a)

$\frac{1}{2\pi fL}$

b)

$2\pi fC$

c)

$\frac{1}{2\pi fC}$

d)

$2\pi fL$

39.

วงจรอนุกรม RLC เมื่อ $X_C\ \ >\ X_L$ ข้อใดถูกต้อง

a)

$Z=R+j(X_C-X_L)$

b)

$Z=R+j(X_C+X_L)$

c)

$Z=R-j(X_C-X_L)$

d)

$Z=R-j(X_C+X_L)$

40.

What is a battery?

a)

switch

b)

power source

c)

insulator

41.

Electrical current will pass easily through metals such as copper, aluminum and gold. These metals are good

a)

things

b)

insulators

c)

charged particles

d)

conductors

42.

a)

中国 zhōng guó

b)

美国 měi guó

c)

西班牙 xī bān yá

d)

法国 fǎ guó

43.

a)

中国 zhōng guó

b)

美国 měi guó

c)

法国 fǎ guó

d)

西班牙 xī bān yá

44.

这是什么国家？zhè shì shén me guó jiā

a)

意大利 yì dà lì

b)

美国 měi guó

c)

英国 yīng guó

d)

法国 fà guó

45.

这是什么国家？zhè shì shén me guó jiā

a)

意大利 yì dà lì

b)

美国 měi guó

c)

英国 yīng guó

d)

法国 fà guó

46.

这是什么国家？zhè shì shén me guó jiā

a)

新加坡 xīn jiā pō

b)

西班牙 xī bān yá

c)

中国 zhōng guó

d)

加拿大 jiā ná dà

47.

小光到过__________。xiǎo guāng dào guò

a)

加拿大 jiā ná dà

b)

中国 zhōng guó

c)

日本 rì běn

d)

新加坡 xīn jiā pō

48.

我们是 _________。wǒ men shì

a)

英国人 yīng guó rén

b)

意大利人 yì dà lì rén

c)

加拿大人 jiā ná dà rén

d)

澳大利亚人 ào dà lì yǎ rén

49.

你去过哪里？nǐ qù guò nǎ lǐ

a)

我去过新加坡。wǒ qù guò xīn jiā pō

b)

我从新加坡来。wǒ cóng xīn jiā pō lái

c)

我是新加坡人。wǒ shì xīn jiā pō rén

d)

我去过法国。wǒ qù guò fà guó

ການປະກອບ ແລະ ວິເຄາະເຄື່ອຂາຍ

Total questions: 49

Worksheet time: 36mins

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