What is phototransistor explain its working?

What is phototransistor explain its working? A phototransistor is similar to a regular BJT except that the base current is produced and controlled by light instead of a voltage source. The phototransistor effectively converts light energy to an electrical signal. This action produces a collector current that increases with I.…

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Why is photoresistor used?

Why is photoresistor used? Photoresistors, also known as light dependent resistors (LDR), are light sensitive devices most often used to indicate the presence or absence of light, or to measure the light intensity. Does a photoresistor need a resistor? A photoresistor is already a resistor and will limit the voltage…

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What is the working principle of photocell?

What is the working principle of photocell? The photocell is a device that works on the principle of the photoelectric effect. A photocell converts light energy to electric energy. The photons with suitable frequency will remove electrons from the metal surface. How does a photo light sensor work? Light sensors…

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How does a phospholipid behave when placed in water?

How does a phospholipid behave when placed in water? When placed in water, hydrophobic molecules tend to form a ball or cluster. The hydrophilic regions of the phospholipids tend to form hydrogen bonds with water and other polar molecules on both the exterior and interior of the cell. … A…

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What affects political efficacy?

What affects political efficacy? Efficacy usually increases with age. There are two types of political efficacy: internal efficacy (the belief that one can understand politics and therefore participate in politics) and external efficacy (that the government will respond to one’s demands). How does political efficacy affect voter turnout quizlet? Political…

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How does a Penrose drain drain?

How does a Penrose drain drain? A Penrose drain is a latex tube that is placed into a wound with one or two ends exiting the skin, allowing fluids to drain from the wound. The drain is typically sutured to the skin to hold the drain in place. Most likely,…

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Can focal seizures spread?

Can focal seizures spread? Focal seizures, also called focal seizures, begin in one area of the brain, but can become generalized and spread to other areas. For seizures of all kinds, the most common treatment is medication. The doctor may also recommend diet therapy, nerve stimulation or surgery, depending on…

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How do noncompetitive inhibitors affect the rate of reaction?

How do noncompetitive inhibitors affect the rate of reaction? Noncompetitive inhibition of an enzyme can occur when an inhibitor binds to an enzyme at a site other than the active site. The noncompetitive inhibitor slows down the reaction rate, i.e. the rate of the product formation is less with inhibitor…

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How does a nerve cell work?

How does a nerve cell work? A neuron (also known as nerve cell) is an electrically excitable cell that takes up, processes and transmits information through electrical and chemical signals. It is one of the basic elements of the nervous system. In order that a human being can react to…

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How do muscle spindles detect stretch?

How do muscle spindles detect stretch? Muscle spindles are stretch receptors within the body of a skeletal muscle that primarily detect changes in the length of the muscle. They convey length information to the central nervous system via afferent nerve fibers. … Muscle spindle Part of Muscle System Musculoskeletal Identifiers…

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What is done by a medical examiner to determine the

What is done by a medical examiner to determine the cause of death? An autopsy (also known as a post-mortem examination or necropsy) is the examination of the body of a dead person and is performed primarily to determine the cause of death, An autopsy is the examination of the…

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What does a magnetometer detect?

What does a magnetometer detect? 4 Magnetometer. A magnetometer is a scientific instrument used to measure the strength and direction of the magnetic field in the vicinity of the instrument. How does a magnetometer in a phone work? How it Works. Smartphones come equipped with a magnetometer so that your…

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What is a magnetometer and how does it work?

What is a magnetometer and how does it work? A magnetometer is a device that measures magnetic field or magnetic dipole moment. … A compass is one such device, one that measures the direction of an ambient magnetic field, in this case, the Earth’s magnetic field. What does the magnetometer…

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How does normally open magnetic switch work?

How does normally open magnetic switch work? Normally Open Reed Switches When an outside magnet approaches, it polarizes the two contacts, allowing them to attract each other and snap together. … When the outside magnet is removed, the stiff contacts spring back into their original position, thus breaking the circuit…

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How does a magnetic stirrer hot plate work?

How do Stirbars work? How does it work? A stir bar magnet is placed inside a container, immersed in the fluid. A separate magnet (or magnets) is placed underneath the container, so that it attracts to the stir bar magnet. … If the magnets are close enough, the stir bar…

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What is a magnetic sensor used for?

What is a magnetic sensor used for? Magnetic sensors are used to detect magnetic fields in the form of flux, strength and directions. Detection of magnetic field and its measurement have always been an essential function in many applications for years (Lei et al., 2013; Trifon and Chong, 1999). How…

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How does a just in time inventory system help enhance

How does a just in time inventory system help enhance product quality quizlet? Companies use this inventory strategy to increase efficiency and decrease waste by receiving goods only as they need them for the production process, which reduces inventory costs. … The just-in-time (JIT) inventory system is a management strategy…

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How does a hydrostatic transmission operate?

How does a hydrostatic transmission operate? The hydrostatic transmission transmits energy using hydraulic fluid. The usual transmission has two hydraulic devices; one working as a variable displacement pump and the other working as a motor connected by hydraulic lines. … As a result the hydrostatic transmission does not require any…

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How does a hydraulic pump build pressure?

How does a hydraulic pump build pressure? Because the swashplate is offset at an angle, the pistons move in and out as it turns. This forces hydraulic fluid into and out of the piston chambers, therefore creating pressure within the system. What are 3 types of hydraulic pumps? There are…

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How do hydraulic motors work?

How do hydraulic motors work? Hydraulic motors convert fluid pressure into rotary motion. Pressurized fluid from the hydraulic pump turns the motor output shaft by pushing on the gears, pistons, or vanes of the hydraulic motor. … Most hydraulic motors must operate under reversible rotation and braking conditions. What is…

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How does it work hydraulic cylinder?

How does it work hydraulic cylinder? A hydraulic cylinder is a mechanical mover that provides strong force in one direction. Hydraulic cylinders typically get their power from a pressurized hydraulic liquid, usually oil. The cylinder creates pressure and then uses that pressure to move the piston piece of the cylinder…

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How does hydra reproduce short answer?

How does hydra reproduce short answer? When food is plentiful, many Hydra reproduce asexually by budding. The buds form from the body wall, grow into miniature adults and break away when mature. When a hydra is well fed, a new bud can form every two days. Does a hydra reproduce…

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What is the difference between HRSG and boiler?

What is the difference between HRSG and boiler? Most of the HRSG’s are internally insulated so that expansion does not affect the external surfaces and the structures. Conventional boilers on the other hand are top supported and free to expand so the insulation is on the outside. How efficient is…

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How does hot wire anemometer measure airflow?

How does hot wire anemometer measure airflow? The anemometer heats the thin wire to a known set temperature, and as the wind passes over the wire, it will begin to cool. The hot wire anemometer calculates wind speed by determining the heat loss of the wire while the sensor is…

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How does a heat pipe system work?

How does a heat pipe system work? A heat pipe is a two-phase heat transfer device with a very high effective thermal conductivity. … In the condenser, the vapor condenses and gives up its latent heat. The condensed liquid returns to the evaporator through the wick structure by capillary action.…

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