Question 1

If a voltage is positive with respect to ground, it is considered to be ____.&#10;A) aboveground&#10;B) belowground&#10;C) grounded&#10;D) charged

Accepted Answer

Voltage being positive with respect to ground indicates it is at a higher potential than the ground, hence the term "aboveground" is used to describe its position relative to ground potential.

Question 2

When the pointer on the voltmeter moves to the right of the zero center, this indicates that the positive&#160; terminal of the voltmeter is connected to a voltage that is positive with respect to ground.

Accepted Answer

When the pointer on the voltmeter moves to the right of the zero center, it indicates that the positive terminal of the voltmeter is connected to a voltage that is positive with respect to the ground or the negative terminal, showing a positive voltage reading.

Question 3

Instead of using two bridge rectifiers, the secondary winding of two transformers in an above- and&#160; belowground circuit can be connected ____.&#10;A) parallel aiding&#10;B) parallel biased&#10;C) series aiding&#10;D) series biased

Accepted Answer

In an above- and belowground circuit, connecting the secondary winding of two transformers in series aiding allows for efficient voltage addition and ensures that the polarities of the voltages from the two transformers aid each other, providing a straightforward way to combine their outputs without the need for two bridge rectifiers.

Question 4

If a voltage is negative with respect to ground, it is considered to be ____.&#10;A) aboveground&#10;B) grounded&#10;C) flooded&#10;D) belowground

Accepted Answer

When a voltage is negative with respect to ground, it is considered to be "below ground" in electrical terminology. This means the potential is lower than the ground reference point.

Question 5

A choke coil cannot be used to filter a current.

Accepted Answer

A choke coil, which is an inductor, can be used to filter out high-frequency noise from a current, allowing only the desired frequencies to pass through, making it an effective component in filtering applications.

Question 6

Most electronic circuits do not require a DC voltage to operate.

Accepted Answer

Most electronic circuits require a DC voltage to operate because it provides a constant voltage level, which is essential for the stable operation of electronic components and devices.

Question 7

Above- and below-ground power supplies are filtered the same way as any other power supply.

Accepted Answer

Above- and below-ground power supplies are both subject to the same electrical hazards, so they must be filtered in the same way to protect against these hazards.

Question 8

When the pointer on a voltmeter moves to the left of the zero center, it indicates that the positive&#160; terminal is connected to a voltage that is ____.&#10;A) positive with respect to ground&#10;B) negative with respect to ground&#10;C) neutral with respect to ground&#10;D) inverted with respect to ground

Accepted Answer

When a voltmeter's pointer moves to the left of the zero center, it indicates that the positive terminal of the voltmeter is connected to a voltage that is negative with respect to ground. This is because voltmeters are designed to show positive deflections when the positive terminal is at a higher potential than the negative terminal, and vice versa.

Question 9

In an electronic circuit, ____ is considered to be 0 volts.&#10;A) aboveground&#10;B) ground&#10;C) belowground&#10;D) ground reference

Accepted Answer

Ground in an electronic circuit is considered to be 0 volts and serves as a reference point for measuring voltage levels within the circuit.

Question 10

A power supply that can furnish a positive and negative output voltage is sufficient for most circuits.

Accepted Answer

Most circuits require both positive and negative supply voltages for proper operation, and a power supply that can furnish both can meet these needs, making it sufficient for most applications.

Deck 37: Above and Below Ground Power Supplies