TRY OUT FINAL TEST ELECTRIC MACHINE (D4-1A)

EMF induction occur due to...

• Magnetic induction

• Electromagnetic reactance

• Electromagnetic induction

• Magnetic reactance

• Magnetic

The transformer has a 10: 2 winding ratio connected to a 100V power source to turn on a 25W lamp. The electric voltage absorbed by the lamp is 20 volts and the current entering the transformer is 0.1 ampere

• TRUE

• FALSE

If 2 pieces of 1 phase transformer are connected in series, they will have a fixed power

• TRUE

• FALSE

One of the parallel conditions for two 1-phase transformers is that they must have the same power

• TRUE

• FALSE

To create a 1 phase autotransformer, the transformers must be in parallel

• TRUE

• FALSE

The greater the voltage regulation value of a transformer, the better the condition of the transformer

• TRUE

• FALSE

Short circuit experiments are carried out to determine the copper loss at nominal voltage

• TRUE

• FALSE

A transformer is used to increase the AC voltage from 12 V to 120 V. If the secondary current is 0.6 A and the number of primary turns is 300, then the number of secondary turns is 900

• TRUE

• FALSE

The ratio of primary winding to secondary transformer winding is 4:10. If the primary current is 5 amperes, then the secondary current is 1 amperes

• TRUE

• FALSE

The function of the transformer is to convert electrical energy into other electrical energy

• TRUE

• FALSE