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Page 138 - Toucpad robotics C11
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    EXERCISE

                                                                                                      Solved Questions
                                                    SECTION A   (Objective Type Questions)
                     QUIZ
                  A.  Tick ( ) the correct option.
                      1.  The “muscles” of a robot that cause movement are called:
                           i.  Sensors                                     ii.  Actuators

                          iii.  Controllers                               iv.  Switches
                      2.  A DC motor converts:
                           i.  Electrical energy into light

                          ii.  Mechanical energy into electrical energy
                          iii.  Electrical energy into mechanical energy

                          iv.  Heat into motion
                      3.  A servo motor is best suited for:
                           i.  Continuous rotation only                    ii.  Precise angular movements

                          iii.  Generating electricity                    iv.  Long-distance communication
                      4.  Which device is used to control speed in a DC motor?
                           i.  Battery                                     ii.  PWM (Pulse Width Modulation)

                          iii.  Gearbox                                   iv.  Fuse
                      5.  An ultrasonic sensor measures:
                           i.  Temperature                                 ii.  Distance using sound waves

                          iii.  Light intensity                           iv.  Voltage
                      6.  A closed-loop control system uses:

                           i.  Only input signal                           ii.  Feedback signal
                          iii.  Random output                             iv.  None of these
                      7.  An example of an open-loop system is:

                           i.  Refrigerator thermostat                     ii.  Automatic washing machine timer
                          iii.  Cruise control in cars                    iv.  Air conditioner with thermostat

                      8.  The electronic ‘brain’ that processes input and controls output is:
                           i.  Motor                                       ii.  Controller
                          iii.  Gear                                      iv.  Battery

                      9.  Infrared sensors detect:
                           i.   eat signatures                             ii.  Water levels
                          iii.  Metal only                                iv.  Magnetic fields

                      10.  Which of the following is not an actuator?
                           i.  DC motor                                    ii.  Servo motor
                          iii.  LED light                                 iv.  Camera

                  136
                  Touchpad Robotics - XI

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