Q5.) a) A PMMC voltmeter with a resistance of 20 2 gives a full-scale deflection of 1 when a potential difference of 100 mV is applied across it. The moving coil dimensions of 30 mm x 25 mm and is wound with 100 turns. The control spr constant is 0.375 x 106 N-m/degree. Find the flux density in the air gap?

Q: A thermistor which has an input of a temperature change, the output form is:

A: The correct answer is OPTION B i.e Voltage

Q: A material that experiences a force and that deforms as a result of charge building up across its…

A: Piezo electric materials are the type of materials which generate electric charges when they are…

Q: 3. دیا a) Explain using appropriate equations why magnetic field lines are confined to the core of a…

A: (a) magnetic flux flowing through a magnetic circuit is given by the formula,Where,N=number of turns…

Q: A magnetic circuit has a mean flux path length of 800 mm and a reluctance of 2.5.105 A-t/Wb. A…

A:

Q: Which of the following sensors has a permanent magnet inside? Hall effect sensor thru-beam optical…

A: Hall effect sensor : It generates a measurable voltage by using a magnetic field. Thru beam optical…

Q: A 500-turn coil is wound on an iron core. When a 120-V-rms 60-Hz voltage is applied to the coil, the…

A: The solution is given below

Q: A flux of 0.0016 Wb flows in a silicon sheet steel coil/core. The arrangement appears as shown below…

A:

Q: In short explain the dependency of the energy storage in the inductor on the dimension and the flux…

A:

Photoconductive Cell

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium sulfide (CdS) is used to make the most commercially available photoconductive particles which are sensitive to light in the visible spectrum. Other less commonly used substances respond to infrared light, but not to the visible spectrum. Such substances are lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), and so on.