Answer the Below Question with Proper Explanation only. Without explanation I ca

Question

Answer the Below Question with Proper Explanation only. Without explanation I cant justify the answer and I wont provide the points.

1.Assertion (A):The transient performance of a feedback control system is normally analyzed by using a unit-step function as the reference input.

Reason (R) :Unit step function is the most common input found in practice.

2.Assertion (A):Strain gauge is an active transducer.

Reason (R) :Strain gauge converts mechanical displacement into change of resistance.

3.Assertion (A):In a quartz crystal ,at resonance the phase shift between output and input is zero.

Reason (R) :Crystal oscillators provide an extremely stable and precise output frequency.

Explanation / Answer

1, assertion and reason are true.

unit step function is DC voltage . it is readly available in labs. this is only one reason , another reason is analytical calculation simplicity compared to other signal like sinisoidal /ramp etc

2. Assertion is false , but reason statement is true.

assertion is false becuse strain guage is passive. strain guage is a passive device . because it doesn't require any power source for its operation

ref : http://www.electro-tech-online.com/threads/active-vs-passive-sensor.87557/

3 Assetion and reason are true

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