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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. For a part of the network shown in Figure, given that i 1 = 4A; i 3 (t) = 5e -t , and i 4 (t) = 10 cos 2t, find v 1 , v 2 , v 3 , v 4 , i 2 , and i 5 .
Q. Show a block diagram of a 4-bit, parallel-input shift-right register and brie?y explain its operation.
a. Explain Choke packet. Describe implicit Congestion Signalling and explicit Congestion Signalling in Congestion control. b. State routing parameters in packet switching networ
Define Salient-pole Rotor Construction - Synchronous Machines? Salient-pole rotor construction on the other hand, may be used for low to medium speed applications. The machines
Q. Show the Overall output limitations of Speed Control? The overall output limitations are as shown in Figure. With base speed defined as the full-field speed of themotor at t
Q. What is the voltage gain of common gate amplifier? The controlled source gmVgs is connected from drain to source with rd in parallel.The resistor is connected Rs is connecte
Assignment
Why is the signal first attenuated and then amplified?
Q. What is the need of MODEM in data communication? Need of Modem: Modems are used to interface computers, computer networks in addition to other terminal equipment to teleco
Define the general purpose embedded system. a. General purpose microprocessor For illustration, Intel 80x86, Motorola 68HCxxx or Sparc b. Embedded general purpose process
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