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Robotics

Robotics · Quick practice · answer shown after each question

Sensors and signals

Question 1 of 10

Question 1 of 10

An active sensor differs from a passive sensor because it

Question 2 of 10

Question 2 of 10

Converting an analogue signal into a digital one involves sampling and

Question 3 of 10

Question 3 of 10

A sensor samples a water level of 74.78 cm, which is quantised to 70 cm. What is the percentage error?

Question 4 of 10

Question 4 of 10

Noise in a sensor signal is

Question 5 of 10

Question 5 of 10

Which type of sensor is best for detecting whether a button has been pressed?

Question 6 of 10

Question 6 of 10

An analogue-to-digital converter (ADC)

Question 7 of 10

Question 7 of 10

A temperature sensor reads 4 °C in melting ice (0 °C) and 96 °C in boiling water (100 °C). If its response is a straight line, what is the true temperature when it reads 50 °C?

Question 8 of 10

Question 8 of 10

A thermistor is a sensor whose resistance changes with

Question 9 of 10

Question 9 of 10

The Nyquist rule says a signal must be sampled at least

Question 10 of 10

Question 10 of 10

Which sensor would best tell a robot that it has bumped into a wall?

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