Department of Collegiate and Technical EducationSession 1 of 8 on

Unit-2Subject-EM&I Semester-3rd Sub Code:15E34CT

Topic Name: TransducersBy:Mrs Mukthambika.S.M

Lecturer E & C

117-GPT, Raichur

Email: mukthambika.sm@gmail.com

TRANSDUCER Non sensor electrical signal

Electrical

quantity response

Transducer elements in cascade

➢ A sensor is defined as an element which senses the condition , state or value of the process variable & produce an output which reflects this condition state or value. Or it is defined as a device that produces a measurable response to the change in a physical condition.

Sensing element

Transduction element

Transducers

Necessity of electrical transducers

According to Transduction principle

MCQ,S

1)How many types of transducers are there.

a)2 b)4 c)6 d)8

2)mechanical transducers sense _______.

a)electrical changes b)physical changes c)chemical changes

d)mechanical changes

3)Electrical transducers generate _________

a)biological signals

b)chemical signals

c)physical signals

d)electrical signals

4)Electrical signals are easy to amplify.

a)True

b)False

6)electrical transducers are________.

a)small & non-portable

b)large & non-portable

c)small & compact

d)large & portable

ANSWERS:

1. a

2. b

3. d

4. a

5. b

6. c

5)the power needs of electrical transducers is ________.

a)maximum

b)minimum

c)zero

d)infinite