Electricity Flashcards
What is DCEN in terms of polarity?
Direct Current Electrode Negative: Electrode is negative; less heat on the electrode.
DCEN is typically used in welding processes where less heat input is desired on the electrode.
What does DCEP stand for and its significance?
Direct Current Electrode Positive: Electrode is positive; more penetration.
DCEP is often used in welding to achieve deeper weld penetration.
Define AC in the context of electricity.
Alternating Current: Polarity switches back and forth; useful for certain applications.
AC is commonly used in power systems and various electrical applications.
What is the definition of Voltage?
Electrical potential difference.
Voltage is measured in volts (V) and is a key parameter in electrical circuits.
What does Amperage refer to?
Flow of electric charge.
Amperage is measured in amperes (A) and indicates the amount of current flowing in a circuit.
Define Resistance in electrical terms.
Opposition to electric current, measured in Ohms.
Resistance affects how much current will flow for a given voltage.
What role does heat play in electricity?
Produced by electrical resistance and controls the fusion process.
Heat generation is a critical factor in processes like welding.
Differentiate between Insulators and Conductors.
Insulators: Materials like rubber that prevent current flow.
Conductors: Materials like copper that allow current flow.
The distinction between insulators and conductors is fundamental in electrical engineering.
What is Open Circuit Voltage?
Voltage present when the circuit is open.
This voltage can be measured when there is no current flow in the circuit.
Define frequency in the context of AC.
The number of cycles per second (Hz) in AC.
Frequency affects the performance and behavior of AC circuits.
What is Constant Current?
Current remains steady; used in SMAW.
SMAW stands for Shielded Metal Arc Welding, where a consistent current is necessary for stable operation.
What is Constant Voltage?
Voltage remains steady; used in GMAW.
GMAW stands for Gas Metal Arc Welding, which requires a stable voltage for effective welding.
