NATIONAL ENGINEERING COLLEGE, K.R.NAGAR 628 503

(An Autonomous Institution Affiliated to Anna University, Chennai)

B.E Degree Examination- Unit Test IDepartment of Electronics and Instrumentation Engineering / VIII Semester

BEI041 -PC BASED INSTRUMENTATION

DATE:09 .01 .2015

MAX. MARKS: 40 TIME: 9.20 AM to 10.20 AMCourse Outcomes assessed

CO1: To make the students to gain a clear knowledge of the basics of digital instruments and measurement techniques . (K2)

Blooms Taxonomy

K1: Remembering

K2:Understanding

K3:Applying

K4:Analyzing

K5:Evaluating

K6:Creating

PART A (4x2= 08 Marks)

Answer ALL questions

1Represent the block diagram of a generalized instrumentation system.(CO1)(K1)

2List the factors which are required to design a PC based measuring system. (CO1)(K1)

3List a few signal conditioning operations.(CO1)(K1)

4Describe the features of signal isolation.(CO1)(K1)

PART B (2x16=32 Marks)

Answer all questions

5(a) What are I/O devices in Data Acquisition and Control system? Explain the function of I/O devices in detail.(b) What are the guide lines to be followed in selecting the data acquisition & control?(CO1)(K1)

6Design a signal-conditioner for a sensor that varies its reistance from 1k TO 5K OVER its operating range to interface to an analog to digital convereter operating in the range of 0V to 5V.(CO1)(K2)

Aptitude Section (2x2=4)

7Eight friends Harsha, Fakis, Balaji, Eswar, Dhinesh, Chandra, Geetha, and Ahmed are sitting in a circle facing the center. Balaji is sitting between Geetha and Dhinesh. Harsha is third to the left of Balaji and second to the right of Ahmed. Chandra is sitting between Ahmed and Geetha and Balaji and Eshwar are not sitting opposite to each other. Who is third to the left of Dhinesh?

8Choose the option which will correctly fill the blankI am writing to enquire _________the possibility of hiring a conference room at the hotel on the 2nd of September.

A) Of

B) About

C) Into

D) After