Question 1

A scientific calculator is set to operate in the Floating Decimal mode (Flo). The calculator display shows 945635.045. Now set the calculator to Engineering mode (Eng). What would the display show?

Accepted Answer

The answer of A scientific calculator is set to operate...

Question 2

$O P = V _ { 1 } ^ { 2 } + V _ { 2 } ^ { 2 } + 2 \left( V _ { 1 } \right) \left( V _ { 2 } \right) \cos \theta$ A radio signal is measured at 150 microvolts ( $R _ { 1 } = 0$ ). Express this as volts.

Accepted Answer

The answer of \(O P = V _ { 1...

Question 3

$O P = V _ { 1 } ^ { 2 } + V _ { 2 } ^ { 2 } + 2 \left( V _ { 1 } \right) \left( V _ { 2 } \right) \cos \theta$ An industrial plant is supplied with high voltage power from the power company. The power lines are rated 13.8 kV. Express this value as volts.

Accepted Answer

The answer of \(O P = V _ { 1...

Question 4

If the cross-sectional area in a circular mils of a wire is 4.107, what is the diameter in mils? Carry the answer to two decimal places.

Accepted Answer

The answer of If the cross-sectional area in a circular...

Question 5

A 2,583-circular-mil cable is composed of 25 strands of copper wire of equal size. What is the approximate diameter of one strand? Round the answer to the nearest tenth.

Accepted Answer

The answer of A 2,583-circular-mil cable is composed of 25...

Question 6

480 volts is connected to an 18-ohm resistive-heating element. How much power is being produced by the heating element? Carry the answer to three decimal places.

Accepted Answer

The answer of 480 volts is connected to an 18-ohm...

Question 7

The resistance of a coil that uses 800 watts is 62 ohms. What is the voltage of the circuit? Round the answer to the nearest hundredth. $$\begin{aligned}
f = \frac { P N } { 60 } \quad \text { where } & f = \text { frequency in hertz } \
P & = \text { number of pairs of poles } \
N & = \text { revolution per minute }
\end{aligned}$$ $$\text { volts } = \sqrt { \text { watts } \times \text { ohms } }$$

Accepted Answer

The answer of The resistance of a coil that uses...

Question 8

Use one space between the number and the scientific notation exponent. A scientific calculator is set to operate in the Floating Decimal mode (Flo). The calculator display shows 945635.045. If the calculator is changed to operate in the Scientific mode (Sci), what would the display show?

Accepted Answer

The answer of Use one space between the number and...

Question 9

A 24-ohm resister has a current of 0.65 amperes flowing through it. How much power is being produced by the resister? Carry the answer to two decimal places.

Accepted Answer

The answer of A 24-ohm resister has a current of...

Quiz 5: Powers and Roots