1. The difference between a sensor and a transducer is that in a transducer: A. no calibration is required for it to be used B.
the measured variable can be converted to an alternative form C. electrical power is always needed D. no electrical power is required at any time 2. A _________ is a safeguard mechanism for coordinating the activities of two or more devices and preventing one device from interfering with the operation of others. A. interrupt B. feedforward control C. adaptive control D. interlock 3. An actuator can also be classified as a transducer depending on whether the physical output has a relationship with the input signal. A. true B. false 4. A common design issue to consider when selecting a sensor for automation is: A. whether it is PNP or NPN B. power required for operation C. robustness D. all of the above. 11. An optical encoder is used to sense speed and position of a rotating shaft in servomotor driven worktable for feedback control. This type of control system uses an OPEN LOOP control system. A. true B. false 4. Which of the following is a good reason for automating a plant
The difference between a sensor and a transducer is that in a transducer no electrical power is required at any time
2.
An interlock is a safeguard mechanism for coordinating the activities of two or more devices and preventing one device from interfering with the operation of others.
3
An actuator can also be classified as a transducer depending on whether the physical output has a relationship with the input signal......True
Since the basketball and the tennis ball both travel to the same direction relative to the ground, the velocity of the basketball relative to the tennis ball is therefore the difference of their velocities. 0.5 m/s - 0.25 m/s = 0.25 m/s Thus, the basketball travel for 0.25 m/s relative to the tennis ball.
<span>Light travels Slower in a material with a higher index of refraction. because </span><span>Water has a higher index of refraction than air and it travels slower (bends) in water high index mean slow travel hope it helps</span>