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BLDC Motor and ESC Quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

How many wires does a typical BLDC motor have?

a)

2

b)

3

c)

4

d)

6

2.

What type of current does a BLDC motor use?

a)

AC

b)

Pulsed DC

c)

DC with commutation

d)

Static current

3.

ESCs convert battery DC power into:

a)

Thermal energy

b)

Rotating torque

c)

Pulsed signals for motor phases

d)

AC voltage for GPS

4.

In a quadcopter, how many ESCs are usually required?

a)

1

b)

2

c)

3

d)

4

5.

Which component helps ESCs to receive control signals?

a)

Battery

b)

Receiver

c)

Camera

d)

Motor

6.

The signal sent to an ESC to control speed is usually:

a)

Digital signal

b)

Analog voltage

c)

PWM (Pulse Width Modulation)

d)

AC signal

7.

BLDC motors operate through:

a)

Spark ignition

b)

Magnetic fields

c)

Fuel combustion

d)

Heat energy

8.

Which of the following is NOT a part of ESC operation?

a)

Signal processing

b)

Voltage regulation

c)

GPS decoding

d)

Current control

9.

BLDC motors require what to operate efficiently?

a)

ESC

b)

Heater

c)

GPS

d)

Diode

10.

ESCs must be calibrated to:

a)

Play music

b)

Save battery

c)

Respond correctly to throttle input

d)

Increase noise

11.

What is the main purpose of ESC calibration?

a)

Increase drone range

b)

Sync ESCs with transmitter throttle range

c)

Reduce camera shake

d)

Improve GPS lock

12.

ESC calibration ensures that:

a)

Motors spin in reverse

b)

Throttle input matches motor output

c)

Batteries charge faster

d)

Propellers are balanced

13.

Before calibrating an ESC, you must:

a)

Bind the receiver

b)

Set the flight mode

c)

Fully charge the propellers

d)

Format the ESC

14.

AUX channels in a transmitter are used to:

a)

Control throttle

b)

Control extra functions like flight modes or camera

c)

Bind receiver

d)

Rotate motors

15.

AUX channels are typically controlled using:

a)

Switches or knobs on the transmitter

b)

Mobile app

c)

ESC firmware

d)

GPS signal

16.

What does binding RX and TX mean?

a)

Calibrating ESCs

b)

Pairing receiver and transmitter

c)

Charging battery

d)

Balancing propellers

17.

To bind a receiver to a transmitter, you must:

a)

Turn off the drone

b)

Enter binding mode on both devices

c)

Start the motors

d)

Plug in the GPS

18.

Which component is responsible for receiving the transmitter signals on the drone?

a)

ESC

b)

GPS

c)

RX (Receiver)

d)

Camera

19.

What usually indicates successful RX-TX binding?

a)

Motor sound

b)

LED light status or beep

c)

Battery vibration

d)

App notification

20.

If your AUX channel switch isn’t working, you should:

a)

Replace the ESC

b)

Calibrate the GPS

c)

Reconfigure channel mapping in transmitter settings

d)

Rebind battery