Transformer Quiz

What is the main purpose of a transformer?

• To increase or decrease voltage or current

• To measure electrical resistance

• To convert AC to DC

• To store electrical energy

What does the symbol 'VP' represent in transformer equations?

• Primary Voltage

• Secondary Voltage

• Number of Secondary Windings

• Number of Primary Windings

What type of transformer increases voltage?

• Step-up transformer

• Step-down transformer

• Core type transformer

• Toroid transformer

What is the relationship between the number of turns and voltage in a transformer?

• Voltage is always constant

• Turns do not affect voltage

• More turns mean lower voltage

• More turns mean higher voltage

What is the term for the current that flows when the secondary is open circuit?

• No-load current

• Full-load current

• Short-circuit current

• Peak current

What does 'NS' represent in transformer equations?

• Number of Secondary Windings

• Number of Primary Windings

• Primary Voltage

• Secondary Voltage

What is the ideal transformer condition?

• Perfectly efficient

• Always loses energy

• Requires a battery

• Only works with DC

What is the formula for induced e.m.f. in a transformer?

• P = V * I

• E = mc^2

• V = I * R

• V = N * dΦ/dt

What happens to the voltage in a step-down transformer?

• It remains the same

• It becomes zero

• It increases

• It decreases

If the primary voltage is 120V and the turns ratio is 0.2, what is the secondary voltage?

• 240V

• 120V

• 60V

• 24V