Problem (1) . True or False /correct if statement is false 10marks) 1. Transduce
ID: 2073335 • Letter: P
Question
Problem (1) . True or False /correct if statement is false 10marks) 1. Transducer is used in control systems a feedback system T F T F T T T Ampere-hour and watt-hour meters are integrating instruments 3. Resistance can be measured with the help of voltmeter. F F F 4. According to application, instruments are classified as switch board and portable. 5. P controller is used to kill the error 6. Calipers measure thickness and distances 7. Transducer output is limited to the voltage. 8. Semi closed loop is a type control systems 9. Precision it indicates the deviation of the reading from a known input 10. Accuracy can be improved up to but not beyond the precision of the instrument T T T T F F F F by calibrationExplanation / Answer
1.T.Transducer may also used as a sensor(sensor just sense the quantity but transducer sense the signal and converts the signal to another form).A feedback system is self analyzing the output and make required changes to the system.
2.T.integrating instruments not only indicate the quantity like voltmeter,ammeter but also record all the readings and measurements.(power consumption measuring meters in houses watt hour meters and ampere hour meters are intergrating instruments.
3.F.Voltmeter can only measure the potential difference between two points.from ohms law V=IR we require both voltage and current(measured by ammeter).
4.T.
5.T.controllers controls the variable to predefined set point to avoid error.P(proportional) controller correct the error by applying correcting factor(how much the obtained value differ from set value)
6.F.Calipers can only measure thickness(small value comparing to distance) of an object by holding or touching the two sides of the object(thickness of wire,inside diameter of a internal hole etc.
7.F.Transducer output maybe vibration,sound,light.But there will be voltage either in the form of input or output.But output is not limited to voltage.
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