TRNSFRMRS

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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


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