TRNSFRMRS
A transformer that has a higher secondary voltage than primary voltage is called a step down transformer.
FALSE
An induced voltage is always the same polarity to the applied voltage
FALSE
Auto transformers help filter voltage spikes between the primary and secondary side.
FALSE
If a transformer has a 2:1 ratio, the primary will use twice as much power as the secondary
FALSE
If a transformer was providing the power to a 42,000 Watt load, and that load was operating at a 80% Power Factor, then a 50 KVA transformer would be sufficient to handle it.
FALSE
If the loads connected to the secondary winding of a transformer were all shut off and there was no current coming out of the secondary winding, there would also be no current flowing in the primary winding at that point in time.
FALSE
If you connect two transformer windings together and H2 and X1 had polarity dots next to them, and you connect H1 and X2 together, you would have made an additive connection.
FALSE
If you connected two transformer winding terminals together (in series), and the terminals both had a polarity dot next to them, you would have made a boost connection
FALSE
It's a common practice to combine transformer windings in series to increase the POWER output of a transformer.
FALSE
The number of turns on the primary winding, determines if a transformer is a step up or step down transformer.
FALSE
The peak value is the amount of voltage measured by a voltmeter
FALSE
The primary purpose of a transformer is to boost current up or down
FALSE
The primary winding of a transformer is connected to the load.
FALSE
The secondary winding of a transformer is connected to the power line.
FALSE
Transformers can change values of voltage but not current.
FALSE
When two transformers are connected in additive polarity it is called a buck connection.
FALSE
A transformer that has a higher secondary voltage than primary voltage is called a step up transformer
TRUE
An induced voltage is always opposite in polarity to the applied voltage.
TRUE
If a transformer has a turns ratio of 1:4 and you connect 120 volts to the primary winding, the transformer would induce 480 volts into the secondary winding.
TRUE
If a transformer has a turns ratio of 1:4 then the primary winding will have approximately 4 times as much current flowing in it as the secondary winding.
TRUE
If a transformer is delivering 12 KVA of power to loads connected to it and the primary is 120 volts, then the current in the primary would be 100 amps.
TRUE
Inductance is measured in Henry's
TRUE
Inductors can produce extremely high voltages when the current flowing through them is suddenly stopped
TRUE
Isolation Transformers have both a primary and a secondary winding.
TRUE
Pure inductive loads or circuits contain no true power or watts
TRUE
The amount of current in the secondary winding of A transformer is determined by the loads connected to the secondary winding.
TRUE
The power factor of a purely reactive circuit is 0%
TRUE
The primary winding of a step-up transformer will have larger size wire than the secondary winding.
TRUE
The primary winding of a transformer is connected to the power source
TRUE
There are three basic types of AC loads: resistive, inductive and capacitive
TRUE
Transformers have very high efficiencies at full load.
TRUE
VARs is an abbreviation for volt-amps-reactive
TRUE
Vectors are lines that indicate both magnitude and direction
TRUE
When two transformers are connected in additive polarity is called a boost connection
TRUE
The power factor of a purely resistive circuit is 100%
True
The secondary winding of a transformer is connected to the load
True