Transformer and Coil Comparison Quiz

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What is the primary function of a step-down transformer?

Converts high voltages into low voltages (correct)

Converts low voltages into high voltages

Alters the voltage of an alternating current

Makes lights dimmer and brighter

How is the primary coil different from the secondary coil in a step-up transformer?

Primary coil has more turns and is made of thick wire (correct)

Primary coil has more turns and is made of thin wire

Primary coil has fewer turns and is made of thin wire

Primary coil has fewer turns and is made of thick wire

What is the primary purpose of a choke coil in a circuit?

To prevent the flow of low-frequency currents

To produce self-induced EMF (correct)

To remove ripples from the output of rectifier circuits

To speed up electric motors

Which component restricts the flow of current and is typically used with a capacitor in a timing circuit?

Resistor Signup and view all the answers

What type of circuit does a printed circuit board (PCB) usually have components inserted into?

Rectangular Signup and view all the answers

What does a light-emitting diode (LED) do as a transducer?

Converts electrical energy to light Signup and view all the answers

Which component is used to connect the power supply to an electronic gadget?

Line cord Signup and view all the answers

What is the main function of an autotransformer?

Can be used only for small step up and down voltages Signup and view all the answers

What is the primary function of a choke coil?

To induce self-EMF in circuits with changing currents Signup and view all the answers

What is a key advantage of dome cameras?

They are difficult to identify which direction they are facing Signup and view all the answers

Which type of camera is well-suited for long distance viewing outdoors?

Bullet camera Signup and view all the answers

What is a key feature of C-mount cameras?

They have detachable lenses Signup and view all the answers

How do day/night cameras function in low light?

They have extra sensitive imaging chips Signup and view all the answers

What does the PTZ in 'PTZ camera' stand for?

Pan/Tilt/Zoom Signup and view all the answers

What is an advantage of IP/network cameras?

They require less cabling and maintenance Signup and view all the answers

Why are high definition (HD) cameras often used in high-risk establishments?

To capture clear footage for evidence Signup and view all the answers

What is the key capability of varifocal cameras?

They can zoom in and out while maintaining focus Signup and view all the answers

How do wireless security cameras transmit footage?

Over WiFi or cellular networks Signup and view all the answers

What is the purpose of a transformer?

To change AC voltage levels Signup and view all the answers

Transformer and Coil Comparison Quiz

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