3rd quiz

What is the difference between a sensor and a transducer?

• A sensor detects and measures physical properties, while a transducer converts energy from one form to another.
• A sensor converts energy, while a transducer detects physical properties.
• Both sensors and transducers are used for measuring temperature only.
• A sensor is a type of transducer that only works with electrical signals.

What is the difference between analog and digital sensors?

• Analog sensors are faster than digital sensors.
• Digital sensors use analog signals for output.
• Analog sensors are more accurate than digital sensors.
• Analog sensors output continuous data; digital sensors output discrete data.

Which property of Ohm's law (V = IR) can act as a sensor?

• Voltage (V) can act as a sensor.
• Current (I) can act as a sensor.
• Resistance (R) can act as a sensor.

What is an offset in sensor characteristics?

• An offset is the maximum range of a sensor's measurement.
• An offset is a constant adjustment applied to a sensor's output to correct for errors.
• An offset is a type of sensor used for measuring distance.
• An offset defines how long the measurement takes to settle to a true value.

What is a strain gauge sensor?

• A strain gauge sensor detects light intensity variations.
• A strain gauge sensor is used for measuring distance.

• A strain gauge sensor measures temperature changes.
• A strain gauge sensor is a device that measures strain by changing its electrical resistance in response to deformation.

Which of these is not an electromagnetic actuator?

• AC motor

• Stepper motor

• Hydraulic motor

• Servo motor

Which of the following is not true when we talk about the difference between AC and DC motors?

• AC motors cannot be used for variable speed applications.
• AC motors require more maintenance than DC motors.
• AC motors are typically used in industrial applications.

• AC motors are more efficient than DC motors.

What is the difference between servo and stepper motors?

• Servo motors use feedback for precise control, while stepper motors move in discrete steps without feedback.
• Servo motors are always more powerful than stepper motors.
• Stepper motors require continuous feedback for operation.
• Servo motors can only rotate in one direction.

What is a pneumatic actuator?

• A pneumatic actuator is a device that uses compressed air to produce mechanical motion.
• A pneumatic actuator is a type of valve that regulates fluid flow.
• A pneumatic actuator is a mechanical device that operates solely on hydraulic pressure.
• A pneumatic actuator is a device that uses electricity to produce mechanical motion.

Which of the following is not part of the hydraulic system?

• Piston

• Filter

• Compressor

• Valve