Free Printable 002400

1.

In a Dual Power Supply diagram shown, "A" is the _____.

a)

positive rail

b)

negative rail

c)

ground rail

d)

neutral rail

2.

In a Dual Power Supply diagram shown, "B" is the _____.

a)

positive rail

b)

negative rail

c)

ground rail

d)

neutral rail

3.

A dual power supply is a specified power supply from one source, which has _______ terminal supplies

a)

one

b)

two

c)

three

d)

four

4.

In dual power supply, the common junction is normally connected to ground and is referred to as the _______.

a)

0V or ground rail

b)

+V or positive rail

c)

-V or negative rail

d)

rail road

5.

In dual power supply, the potential difference between the outer rails is equal to ______.

a)

2 x V

b)

1 x V

c)

0 x V

d)

3 x V

6.

DUAL POWER SUPPLY
In the diagram below, determine I1

a)

$I_{1\ }=\ \frac{V}{R_1}$

b)

$I_{1\ }=\ \frac{2V}{R_1}$

c)

$I_{1\ }=\ V_1R_1$

d)

$I_{1\ }=\ V_{2\ }R_2$

7.

DUAL POWER SUPPLY
In the diagram below, determine I2

a)

$I_{2\ }=\ \frac{V}{R_2}$

b)

$I_{2\ }=\ \frac{2V}{R_1}$

c)

$I_{2\ }=\ V_2R_2$

d)

$I_{2\ }=\ I_t-I_1$

8.

DUAL POWER SUPPLY

when $I_1=I_2$

a)

there will be no current in the 0V (ground rail)

b)

the circuit will explode

c)

+V will be maximum

d)

-V will be 0

9.

DUAL POWER SUPPLY

there will be no current in the 0V (ground rail), when ____

a)

$I_1=I_2$

b)

$I_1+I_2=I$

c)

$I_1=3A$

d)

$I_2=1A$

10.

DUAL POWER SUPPLY

determine $I$

a)

$I=\frac{2V}{R}$

b)

$I=+\frac{V}{R}$

c)

$I=\frac{V}{R_1}$

d)

$I=-\frac{V}{R2}$

11.

DUAL POWER SUPPLY

determine the Ia

a)

$I_1+I$

b)

$I_1-I_2$

c)

$I$

d)

$I_2$

12.

DUAL POWER SUPPLY

determine Ib

a)

$I_1+I$

b)

$I_1-I_2$

c)

$I$

d)

$I_2$

13.

DUAL POWER SUPPLY

determine Ic

a)

$I_1+I$

b)

$I_1-I_2$

c)

$I_2+I$

d)

$I_2$

14.

Determine I.

a)

$I=\frac{2V}{\left(R_1+R_2\right)}$

b)

$I=\frac{V}{\left(R_1+R_2\right)}$

c)

$I=I\cdot R_1$

d)

$I=I\cdot R_2$

15.

Determine V1

a)

$V_1=I\cdot R_1$

b)

$V_1=I\cdot R_2$

c)

$V_1=I\cdot\left(R_1+R_2\right)$

d)

$V_1=V_2$

16.

Determine V2

a)

$V_2=I\cdot R_2$

b)

$V_1=I\cdot R_1$

c)

$V_1=I\cdot\left(R_1+R_2\right)$

d)

$V_1=V_2$

17.

a loss of the ground rail would produce _________.

a)

a rise of voltage across one of the supplies.

b)

a short circuit

c)

a decrease of voltage

d)

no effect in the circuit

18.

A loss of the ground rail could cause damage to the equipment

a)

TRUE

b)

FALSE

19.

Protective fuses SHOULD BE connected in the ground rail circuit to avoid this possibility.

a)

TRUE

b)

FALSE

20.

When DC and AC supplies are combined, the AC voltage will ______.

a)

have a DC bias

b)

drop to zero

c)

will become DC

d)

will reach maximum

21.

COMBINED AC AND DC

DC Voltage = 6V
AC Voltage = 20 Vpp
What is the output voltage

a)

-4V to 16V

b)

-6V to 14V

c)

0 to +20V

d)

-5V to +15V

22.

COMBINED AC AND DC

DC Voltage = -2V
AC Voltage = 20 Vpp
What is the output voltage

a)

-2V to +18V

b)

-12V to 8V

c)

0 to +20V

d)

-5V to +15V

23.

In the figure below, what is the voltage reading at point A with point B as a reference?

a)

+12V

b)

0V

c)

-12V

d)

+24V

24.

In the same figure, what is the voltage reading at point A with point C as a reference?

a)

+12V

b)

0V

c)

-12V

d)

+24V

25.

In this figure, what is voltage level between point A and point B?

a)

V1 + V2

b)

V1

c)

V2

d)

$\frac{V1}{V2}$

26.

Refer to the figure below. If $V_1=20\ V_{pp}$ and $V_2=5V$ , which of the following waveform represents the output voltage V?

a)

b)

c)

d)

27.

What is the current in R3?

a)

$I_{ }=\frac{2V}{R_3}$

b)

$I=\frac{V}{R_3}$

c)

$I=\frac{\left(+V-V\right)}{R_3}$

d)

$I=I_2-I_1$

28.

Determine the current "I"

a)

66.7 mA

b)

0.067 mA

c)

4.8 A

d)

0.0897 A

29.

Determine I1

a)

0.24A

b)

0.1A

c)

0.48A

d)

480mA

30.

Determine I2

a)

0.15A

b)

120mA

c)

0.24A

d)

240mA

31.

Determine Id

a)

0.12A

b)

120uA

c)

0.16A

d)

240mA

32.

Determine Ic

a)

0.12A

b)

120uA

c)

0.27A

d)

240mA

33.

Determine Ib

a)

-0.05A

b)

120mA

c)

0.16A

d)

240mA

34.

what is the diagram shown?

a)

Wheatstone bridge

b)

London bridge

c)

Wheat Bread

d)

full-wave rectifier

35.

In a "balanced" Wheatstone bridge, ____.

a)

$I_{R_3}=0$

b)

$I_{R_3}=1A$

c)

$I_{R_3}=\pi$

d)

$I_{R_3}=\max imum$

36.

In a "balanced" Wheatstone bridge, ____.

a)

$\frac{R_1}{R_4}=\frac{R_2}{R_5}$

b)

$\frac{R_1}{R_2}=\frac{R_4}{R_5}$

c)

$V_1=V_2$

d)

$I_{R_3}=0$

37.

In an "unbalanced" Wheatstone bridge, ____.

a)

$\frac{R_1}{R_4}=\frac{R_2}{R_5}$

b)

$I_1R_1=I_2R_2$

c)

$V_1=V_2$

d)

$I_{R_3}\ne0$

38.

Assume a balanced Wheatstone bridge. Determine "R".

a)

66.7 ohms

b)

333.33 ohms

c)

100 ohms

d)

133 ohms

002400

Total questions: 38

Worksheet time: 19mins

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