Q.2 Write TRUE or FALSE then correct the false ones for the following 1. Photoresistor is a solid-state device which converts incident light into an electric current. It is made of Silicon and consisted of a shallow diffused p-n junction. 2. Thermocouple is made of two wires which are composed of dissimilar metals are joined at both ends and one of the ends is heated. 3. Tactile sensors have two PVDF layers separated by a soft film which transmits the motion. 4. Diaphragms, capsules, and bellows are used to monitor the vacuum pressure. 5. Photo emitting devices are used as proximity switches. When a magnet attached to an object brought close to the switch, the magnetic reeds attract to each other and close the switch contacts. 6. LVDT has three coils symmetrically spaced along an insulated tube. The central coil is primary coil and the other two are secondary coils.

Q.2 Write TRUE or FALSE then correct the false ones for the following 1. Photoresistor is a solid-state device which converts incident light into an electric current. It is made of Silicon and consisted of a shallow diffused p-n junction. 2. Thermocouple is made of two wires which are composed of dissimilar metals are joined at both ends and one of the ends is heated. 3. Tactile sensors have two PVDF layers separated by a soft film which transmits the motion. 4. Diaphragms, capsules, and bellows are used to monitor the vacuum pressure. 5. Photo emitting devices are used as proximity switches. When a magnet attached to an object brought close to the switch, the magnetic reeds attract to each other and close the switch contacts. 6. LVDT has three coils symmetrically spaced along an insulated tube. The central coil is primary coil and the other two are secondary coils.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter30: Dc Motors

Section: Chapter Questions

Problem 6RQ: What is CEMF?

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Question

Q.2 Write TRUE or FALSE then correct the false ones for the following
1. Photoresistor is a solid-state device which converts incident light into an electric current.
It is made of Silicon and consisted of a shallow diffused p-n junction.
2. Thermocouple is made of two wires which are composed of dissimilar metals are joined
at both ends and one of the ends is heated.
3. Tactile sensors have two PVDF layers separated by a soft film which transmits the
motion.
4. Diaphragms, capsules, and bellows are used to monitor the vacuum pressure.
5. Photo emitting devices are used as proximity switches. When a magnet attached to an
object brought close to the switch, the magnetic reeds attract to each other and close the
switch contacts.
6. LVDT has three coils symmetrically spaced along an insulated tube. The central coil is
primary coil and the other two are secondary coils.

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