If Na n Nd for a pn junction is given then how can we calculate the depletion width. Series reactor starter Battery banks are in connected in series or parallel and why.
Plant cost for AC transmission circuit breakers, transformers etc is much lower than the equivalent DC transmission c. Interposing current transformer are equipped with a wide range of taps that can be selected by the user to achieve the balance required. Combustion-resistant vegetable oil-based dielectric coolants and synthetic pentaerythritol tetra fatty acid C7, C8 esters are also becoming increasingly common as alternatives to naphthenic mineral oil.
Often the advantages of 3 phase motors, and other 3 phase equipment, make it worthwhile to convert single phase to 3 phase so that small and large consumers need not want to pay for the extra cost of a 3 phase service but may still wish to use 3 phase equipment.
The code is a letter that often follows a three-digit number such as Z. Only one of the terminals is evident in the earth resistance. Motor generator set is also referred to as a genset, or more commonly, a generator. Why computer humming sound occurred in HT transmission line.
What is different between resistance grounding system and resistance earthing system. What are the various kind of cables used for transmission. Small units are now available for home use as well. These wires are made of materials such as Constantan and Manganin because of their high resistivity, and low temperature coefficients.
Power Quality meters are common in many industrial environment. What is the full form of KVAR. Wire wound resistors — length of wire wound around an insulating cylindrical core are known as wire wound resistors. Advantages of PD controller. Quality factor q depends on frequency and bandwidth.
What will happen if DC supply is given on the primary of a transformer. What does quality factor depend on in resonance. A variable frequency transformer is a doubly-fed electric machine resembling a vertical shaft hydroelectric generator with a three-phase wound rotor, connected by slip rings to one external ac power circuit.
Design of all power equipments also comes under power engineering. Due to following reasons, AC systems are preferred over DC systems: It reduces the harmonics and it also reduces sparking and arching across the mechanical switch so that it reduces the voltage spike seen in a inductive load Which type of motor is used in trains, what is the rating of supply used explain Working principal.
Explain What is use of lockout relay in ht voltage. Speed of the rotor of an induction motor is always less than its synchronous speed. It can be defined as the ratio of differential voltage-gain to common made voltage gain.
Knee point voltage is calculated for electrical Current transformers and is very important factor to choose a CT. What is the different between digital phase converter and ordinary phase converter. As we know that Electrical is having two type of load, Active and Reactive.
When a fault on the network occurs, a large fault current occurs. Generator persists stationary magnetic field and rotating conductor which rolls on the armature with slip rings and brushes riding against each other, hence it converts the induced emf into dc current for external load whereas an alternator has a stationary armature and rotating magnetic field for high voltages but for low voltage output rotating armature and stationary magnetic field is used.
What is electrical diversity factor in electrical installations.
This effect is called as Corona effect, and it is considered as power loss. Design a circuit to get the time difference between two ttl pulses in microsecond.
Delta-star is a distribution kind of transformer where from secondary star neutral is taken as a return path and this configuration is used for Step down voltage phenomena. Today, non-toxic, stable silicon-based or fluoridated hydrocarbons are used, where the added expense of a fireresistant liquid offsets additional building cost for a transformer vault.
Electrical diversity factor is usually more than one. What is the main use of rotary phase converter?. Basic Electrical & Electronics Interview Questions & Answers Electrical Technology EE Questions / Answers, Electrical & Electronics Notes and Articles 38 Comments Electrical & Electronics Interview Questions & Answers.
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