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Q. Nonsalient-pole rotor construction?
The nonsalient-pole (smooth or cylindrical) rotor construction is preferred for high-speed turbine-driven alternators (known also as turbo alternators or turbine generators), which are usually of two or four poles driven by steamturbines or gas turbines. The rotors for suchmachines may be made either from a single steel forging or from several forgings shrunk together on the shaft.
The maximum value of the induced voltage is
which are identical in form to the corresponding emf equations for a transformer. The effect of a time-varying flux in association with stationary transformer windings is the same as that of the relative motion of a coil and a constant-amplitude spatial flux-density wave in a rotating machine. The space distribution of flux density is transformed into a time variation of voltage because of the time element introduced by mechanical rotation. The induced voltage is a single-phase voltage for single-phase synchronous machines of the nature discussed so far. As pointed out earlier, to avoid the pulsating torque, the designer could employ polyphase windings and polyphase sources to develop constant power under balanced conditions of operation.
Q. Show the procedure of Octal to Decimal Conversion? To convert from Octal to Decimal, multiply the value in every position by its Octal weight and add each value. Using the v
If a current of 20A flows for five minutes, find the quantity of electricity transferred. Quantity of electricity, Q = It = 20 x 5 x 60 = 6000C
Simplest equivalent circuit topology using lumped elements: For each of the Smith chart traces below, sketch (at the right of each chart) the simplest equivalent circuit topol
how does Proportional band affect the performance of control system?
What is the clock frequency of 8086? Internal clock Frequency 5 MHz 8MHz External Clock Frequency 15MHZ 24MHZ
Customer Indexing: Customer indexing (CI) is a method for enumerating the total number of consumers in a utility and tagging them to their respective poles, transformers and f
An n-channel depletion MOSFET, for which I DSS = 7mA and V P = 4 V, is said to be operating in the ohmic region with drain current i D = 1 mA when v DS = 0.8 V. Neglecting the
Normal 0 false false false EN-IN X-NONE X-NONE 8085MICROPROCESSOR ARCHITECTURE
ADD Instruction This instruction use to add contents of any register or memory location with the contents of accumulator. There are two formats for ADD instruction to ad
Q. Define the spectral resolution of satellite? Spectral resolution : The sensitivity to different features of earth is the most important aspects considered in the spectral
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