Chapter Two Quiz Flashcards
Examples of insulators are:
Rubbers, plastics, and many ceramics.
Which statement supports the fact that metals are good conductors?
Many free electrons.
The static characteristics of a welding power source are indicated on a graph which plots
Voltage vs. Current
A voltage sensing wire feed system must be used with a ___________ to produce a stable self-regulating welding arc.
CC power source
The short circuit current in a CV welding power source is determined by
Static and dynamic characteristics
The conductor size of the secondary windings of a welding transformer power source is _
Larger than primary.
Mechanical reactor control is used on which type of welding power source?
AC transformer
A saturable reactor power source uses ________________ to adjust the output .
Third winding on the transformer
A rectifier consists of components that _
AC to DC
The main components used to rectify are
diodes
Components typically used to correct the power factor of a transformer-rectifier welding power source are
capacitors
SCR controlled welding power sources use _________________ to adjust the output
gate pulse to initation conduction by diode
Which was the first welding power source design to incorporate a feedback circuits using magnetic fields?
Saturable reactor
An inductor in a welding power source is used to
Filter DC output and affect dynamic characteristics.
Which was the first type of welding power source to provide accurate control of the pulsed GMAW process over a wide range of pulse frequencies?
Transistor output
Inverters are used in welding power sources to…
DC to AC
One of the major advantages of inverter welding power sources is
small size low weight
High frequency arc starting circuits use _________________to generate the high frequency.
spark gap
Synergic control is typically used for the _____________ process .
GMAW
DC generator is different to alternator because:
DC generators have a conductor that moves quickly through a magnetic field.
