Question 1

$E _ { i } = E _ { \max } \sin \theta$ How many volts are required if the power is 25 watts and the resistance is 64 ohms?

Accepted Answer

40

Question 2

The square of the diameter equals the cross-sectional area. Find the cross-sectional area in the circular mils of a wire that is 104 mils in diameter.

Accepted Answer

10,816

Question 3

$E _ { i } = E _ { \max } \sin \theta$ When the resistance is 73.3 ohms and the power is 165 watts, what is the value of the current in amperes? Carry answer to two decimal places.

Accepted Answer

1.50

Question 4

An electrical cable has a cross-sectional area (CM) of 1,000,000 circular mils and contains 19 strands. Find the diameter (d) of each strand using $E _ { a }$ . Carry the answer to two decimal places.

Accepted Answer

The answer of An electrical cable has a cross-sectional area...

Question 5

When using a Texas Instruments TI 36X calculator, to activate the scientific notation mode press the following keys: A) 2^nd function key and X² B) 2^nd function key and 5 key C) 3^rdfunction key and 6 key D) 3^rdfunction key only

Accepted Answer

The answer of When using a Texas Instruments TI 36X...

Question 6

If a 250,000 circular mil cable is composed of 37 strands, what is the approximate diameter of each strand? Carry the answer to two decimal places.

Accepted Answer

The answer of If a 250,000 circular mil cable is...

Question 7

If [30][X²][=] is entered in a calculator the display will show: A) 60 B) 900 C) 30 D) 30 x 30

Accepted Answer

The string of characters represents the calculation 30 * (1 + 12 * 1 + 1 + 0), which simplifies to 30 * 14 = 420. This is then squared, resulting in 420 * 420 = 176400.

Question 8

The square of the diameter equals the cross-sectional area. A cable is checked for a power job and is found to be too small. The cable contains 62 strands of copper wire that each have a diameter of 37.2 mils. What is the size of the cable in circular mils? Carry the answer to two decimal places.

Accepted Answer

The answer of The square of the diameter equals the...

Question 9

Using the reciprocal key on a calculator, the reciprocal of 4 is:
A) 4.0
B) 4.4
C) 0.4
D) 0.25

Accepted Answer

The reciprocal of a number is 1 divided by that number. Therefore, the reciprocal of 4 is 1/4, which equals 0.25.

Question 10

If a calculator does not contain an n^th root key, the n^th power key can be used by raising the number to the reciprocal of the power.

Accepted Answer

If a calculator does not have a specific root key, the power key can be used instead by raising the number to the reciprocal of the power. For example, to find the cube root of a number, you can raise it to the power of 1/3.

Question 11

If a 5,000,000 circular mil cable is composed of 37 strands of copper wire of equal size. What is the approximate diameter of one strand? Carry the answer to two decimal places.

Accepted Answer

The answer of If a 5,000,000 circular mil cable is...

Question 12

$E _ { i } = E _ { \max } \sin \theta$ When the power is 220 watts and the resistance is 100 ohms, what voltage is in the circuit? Carry the answer to two decimal places.

Accepted Answer

The answer of \(E _ { i } = E...

Question 13

$E _ { i } = E _ { \max } \sin \theta$ Find the number of volts in the circuit if the resistance has a value of 22 ohms and uses 550 watts.

Accepted Answer

The answer of \(E _ { i } = E...

Question 14

When a number must be squared, the square key symbol on a calculator is: A) X² B) $I = \frac { Z } { E }$ C) $E = \frac { V } { I }$ D) $I = \frac { E } { Z }$

Accepted Answer

The square key symbol on a calculator is represented by the symbol “X²”. The other options are equations related to electricity and are not relevant to the question.

Question 15

The square root key on a calculator looks like: A) $q 1$ B) n² C) X² D) $q2$

Accepted Answer

The answer of The square root key on a calculator...

Question 16

The number of watts used in a circuit is equal to the volts squared divided by the ohms. Find the wattage used in the circuit shown. Round the answer to the nearer tenth. $E _X$

Accepted Answer

The answer of The number of watts used in a...

Question 17

$O P = V _ { 1 } ^ { 2 } + V _ { 2 } ^ { 2 } + 2 \left( V _ { 1 } \right) \left( V _ { 2 } \right) \cos \theta$ A calculator is set in the Engineering mode. The display shows: 56.345 -03. Express this value in the proper engineering units.
A) 56.345 micro
B) 56.345 milli
C) 5.6345 milli
D) 563.45 milli

Accepted Answer

The value on the calculator is 56.345 × 10^(-3), which is equivalent to 56.345 milli. This is the proper engineering unit for the given value.

Question 18

A cable is checked for a power installation and is found to be too small. The cable has 37 strands of copper wire, each having a diameter of 82.2 mils. Find the size of the cable in circular mils. Carry answer to two decimal places.

Accepted Answer

The answer of A cable is checked for a power...

Question 19

$E _ { i } = E _ { \max } \sin \theta$ If the resistance has a value of 550 ohms and uses 22 watts of power, find the number of amperes of current that the resistance takes. Carry the answer to one decimal place.

Accepted Answer

The answer of \(E _ { i } = E...

Question 20

To find the number of watts used in any circuit, the amperes squared are multiplied by ohms. Find the number of watts for the device shown. Carry the answer to two decimal places. $E _ { \text {LINE } }$

Accepted Answer

The answer of To find the number of watts used...

Quiz 5: Powers and Roots

Ei=Emax⁡sin⁡θE _ { i } = E _ { \max } \sin \thetaEi​=Emax​sinθ How many volts are required if the power is 25 watts and the resistance is 64 ohms?

The square of the diameter equals the cross-sectional area. Find the cross-sectional area in the circular mils of a wire that is 104 mils in diameter.

Ei=Emax⁡sin⁡θE _ { i } = E _ { \max } \sin \thetaEi​=Emax​sinθ When the resistance is 73.3 ohms and the power is 165 watts, what is the value of the current in amperes? Carry answer to two decimal places.

An electrical cable has a cross-sectional area (CM) of 1,000,000 circular mils and contains 19 strands. Find the diameter (d) of each strand using EaE _ { a }Ea​ . Carry the answer to two decimal places.

When using a Texas Instruments TI 36X calculator, to activate the scientific notation mode press the following keys:

If a 250,000 circular mil cable is composed of 37 strands, what is the approximate diameter of each strand? Carry the answer to two decimal places.

If [30][X2][=] is entered in a calculator the display will show:

The square of the diameter equals the cross-sectional area. A cable is checked for a power job and is found to be too small. The cable contains 62 strands of copper wire that each have a diameter of 37.2 mils. What is the size of the cable in circular mils? Carry the answer to two decimal places.

Using the reciprocal key on a calculator, the reciprocal of 4 is:

If a calculator does not contain an nth root key, the nth power key can be used by raising the number to the reciprocal of the power.

If a 5,000,000 circular mil cable is composed of 37 strands of copper wire of equal size. What is the approximate diameter of one strand? Carry the answer to two decimal places.

Ei=Emax⁡sin⁡θE _ { i } = E _ { \max } \sin \thetaEi​=Emax​sinθ When the power is 220 watts and the resistance is 100 ohms, what voltage is in the circuit? Carry the answer to two decimal places.

Ei=Emax⁡sin⁡θE _ { i } = E _ { \max } \sin \thetaEi​=Emax​sinθ Find the number of volts in the circuit if the resistance has a value of 22 ohms and uses 550 watts.

When a number must be squared, the square key symbol on a calculator is:

The square root key on a calculator looks like:

The number of watts used in a circuit is equal to the volts squared divided by the ohms. Find the wattage used in the circuit shown. Round the answer to the nearer tenth. EXE _XEX​

A cable is checked for a power installation and is found to be too small. The cable has 37 strands of copper wire, each having a diameter of 82.2 mils. Find the size of the cable in circular mils. Carry answer to two decimal places.

Ei=Emax⁡sin⁡θE _ { i } = E _ { \max } \sin \thetaEi​=Emax​sinθ If the resistance has a value of 550 ohms and uses 22 watts of power, find the number of amperes of current that the resistance takes. Carry the answer to one decimal place.

To find the number of watts used in any circuit, the amperes squared are multiplied by ohms. Find the number of watts for the device shown. Carry the answer to two decimal places. ELINE E _ { \text {LINE } }ELINE ​

$E _ { i } = E _ { \max } \sin \theta$ How many volts are required if the power is 25 watts and the resistance is 64 ohms?

$E _ { i } = E _ { \max } \sin \theta$ When the resistance is 73.3 ohms and the power is 165 watts, what is the value of the current in amperes? Carry answer to two decimal places.

An electrical cable has a cross-sectional area (CM) of 1,000,000 circular mils and contains 19 strands. Find the diameter (d) of each strand using $E _ { a }$ . Carry the answer to two decimal places.

If [30][X²][=] is entered in a calculator the display will show:

If a calculator does not contain an n^th root key, the n^th power key can be used by raising the number to the reciprocal of the power.

$E _ { i } = E _ { \max } \sin \theta$ When the power is 220 watts and the resistance is 100 ohms, what voltage is in the circuit? Carry the answer to two decimal places.

$E _ { i } = E _ { \max } \sin \theta$ Find the number of volts in the circuit if the resistance has a value of 22 ohms and uses 550 watts.

The number of watts used in a circuit is equal to the volts squared divided by the ohms. Find the wattage used in the circuit shown. Round the answer to the nearer tenth. $E _X$

$E _ { i } = E _ { \max } \sin \theta$ If the resistance has a value of 550 ohms and uses 22 watts of power, find the number of amperes of current that the resistance takes. Carry the answer to one decimal place.

To find the number of watts used in any circuit, the amperes squared are multiplied by ohms. Find the number of watts for the device shown. Carry the answer to two decimal places. $E _ { \text {LINE } }$