Electrical Principles Quiz

What Electrical Principle do Transformers use?

• Mutual Invention

• Self Inductance

• Mutual Inductance

• Self Invention

100 turns on the Primary and 300 on the Secondary. What type of Transformer is it?

• Step Down

• Step Right

• Step Left

• Step Up

What additional feature is required on a site 110v Transformer?

• It must only supply 110v.

• It must be green.

• It must be Centre Tapped to Earth.

• It must have blue sockets.

What is the general formula for transformers?

• Np/Ns=Vs/Vp=Is/Ip

• Np/Ns=Vs/Vp=Ip/Is

• Np/Ns=Vp/Vs=Is/Ip

• Ns/Np=Vs/Vp=Is/Ip

Primary of 1200 turns, secondary of 300 turns, primary voltage if the output voltage is 100v?

• 230v

• 400v

• 100v

• 25v

Primary of 300 turns, secondary of 1200 turns, secondary current if the primary current is 16A?

• 4A

• 16A

• 64A

• 32A

230 turns on the primary and 5000 turns on the secondary, what type of transformer is it?

• Step Down

• Step Right

• Step Up

• Step Left

230 turns on the primary, 5000 turns on the secondary, supply voltage is 230v, output voltage?

• 21.74A

• 5000A

• 21.74v

• 5000v

230 turns on the primary, 5000 turns on the secondary, supply current is 10A, output current?

• 0.46V

• 0.46A

• 347.83V

• 347.83A

How do you calculate turns per volt?

• Primary Turns divide by Secondary Current

• Secondary Turns Divide by Primary Current

• Secondary Volts divide by Secondary Turns

• Primary Turns divide by Primary Volts