Electronics Instruments And Measurements Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

ELECTRONICS INSTRUMENTS AND MEASUREMENTS

4th Exam/ECE/2461/6168/Dec’11

Duration: 3 Hrs

SECTION A

Q1. Answer the following

a. Define Reproducibility.

b. Define Precision.

c. Define sensitivity.

d. Define percentage error.

e. THD stands for _________

f. State two advantages of PMMC movement.

g. _________ is the smallest change to which the instrument will respond.

h. The sensitivity of an instrument should be as _________ as possible.

i. PMMC stands for _________

j. The scale of moving iron type instrument is _________

SECTION B

Note: Attempt any five questions.

Q.2    a. Distinguish between accuracy and precision.

b. What is loading effect of instrument?

c. How can we measure voltage and frequency using CRO?

d. Draw the block diagram of Wave analyzer and explain its principle.

e. Explain the working and principle of Wheatstone bridge with a suitable diagram.

f. What is difference between dual beam and dual slope CRO?

g. What do you mean by gross errors?

SECTION C

Note: Attempt any THREE questions

Q3. Draw the block diagram of CRO and explain its working.

 Q4. Draw the diagram of PMMC instrument. Explain its principle of operation.

Q5. Draw block diagram of function generator and explain its working.

Q6. Write short notes on the following

a. Digital Multimeter

b. Logic probe