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Robotics

Robotics · Quick practice · answer shown after each question

Motors and power

Question 1 of 10

Question 1 of 10

A stepper motor has a step angle of 1.8°. How many steps make one full revolution?

Question 2 of 10

Question 2 of 10

An H-bridge circuit is used to

Question 3 of 10

Question 3 of 10

Batteries connected in series

Question 4 of 10

Question 4 of 10

A robot draws 2 A from a 2,000 mAh battery. Approximately how long will it run?

Question 5 of 10

Question 5 of 10

A robot wheel has a diameter of 7 cm. Roughly how far does the robot move in one turn of the wheel? (Take π = 22/7.)

Question 6 of 10

Question 6 of 10

A DC motor's direction can be reversed by

Question 7 of 10

Question 7 of 10

PWM (pulse-width modulation) is often used to

Question 8 of 10

Question 8 of 10

A motor driver is needed because microcontroller pins

Question 9 of 10

Question 9 of 10

Gears that reduce speed increase the

Question 10 of 10

Question 10 of 10

A battery labelled 7.4 V, 2,200 mAh stores about how much energy?

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.