Transformer Practice Problems

Look at the diagram and answer the questions that follow. Your answer should have a UNIT ON IT.

What is the secondary voltage?

• 2400 V

• 2,600 V

• 2,000 V

• 24,000 V

What is the secondary current?

• 1 A

• 1.5 A

• 0.1 A

• 10 A

Tags

NGSS.HS-PS2-5

What is the transformer's power?

• 24000 W

• 2,400 W

• 2,200 W

• 2,000 W

Tags

NGSS.HS-PS2-5

Still referring to the previous questions...is it a step up or step down transformer?

• step down

• step up

• cannot be determined

A transformer has a primary coil with 200 turns, and a secondary coil with 2000 turns. The

input voltage is 120 V, and it runs at 1800 W.

What is the secondary voltage?

• 12000 V

• 1,300 V

• 200 V

• 1,200 V

A transformer has a primary coil with 200 turns, and a secondary coil with 2000 turns. The

input voltage is 120 V, and it runs at 1800 W.

What is the transformer's power?

• 1,900 W

• 18000 W

• 1,800 W

• cannot be determined

Tags

NGSS.HS-PS3-2

A transformer has a primary coil with 200 turns, and a secondary coil with 2000 turns. The

input voltage is 120 V, and it runs at 1800 W. Is this step up or step down transformer?

• step up

• step down

• cannot be determined

Tags

NGSS.HS-PS3-3

A transformer has a primary coil with 100 turns and 35 A , and the secondary coil has 150 turns. The power in the secondary coil is 1400 W.

What is the secondary current flowing in the transformer?

• 26 A

• 23.6 A

• 24.3 A

• 23.3 A

Tags

NGSS.HS-PS3-1

A transformer has a primary coil with 100 turns and 35 A , and the secondary coil has 150 turns. The power in the secondary coil is 1400 W.

What is the voltage in the secondary coil?

• 60 V

• 70 V

• 68 V

• 70 V

A transformer has a primary coil with 100 turns and 35 A , and the secondary coil has 150 turns. The power in the secondary coil is 1400 W.

What is the voltage in the primary coil?

• 60 V

• 40 V

• 80 V

• 100 V