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A250-V, 50-kWshort-shunt compound dc generator,whose schematic diagramis shown in Figure, has the following data: armature resistance 0.05 , series-field resistance 0.05 , and shunt-field resistance 130 . Determine the induced armature emf at rated load and terminal voltage, while taking 2V as the total brush-contact drop.
Explain briefly the operation, draw the functions, formulas and observations. (i) Write an m-file "imnorm.m" which takes an image finds min and max values and uses them to nor
Q. Prove mathematically that the operating point does not depend on beta, in a potential divider bias circuit ? To determine the operating point, consider the input section of
Thevenin' s Theorem Thevenins Theorem states: "Any linear circuit containing several energy source and resistances can be replaced by just a Single Voltage in series with a
Q. A single-phase, two-winding, 10-kVA, 440:110- V, 60-Hz transformer is to be connected as an autotransformer to supply a load at 550 V from a 440-V supply. Draw a schematic diagr
Demodulators for FM Figure shows a block diagram of a general FM demodulator, which is implemented by generating an AM signal whose amplitude is proportional to the instantane
Q. The no-load and blocked-rotor tests conducted on a 110-V, single-phase induction motor yield the following data: • No-load test: input voltage 110 V, input current 3.7 A, and
Speed and Torque Control of Polyphase Induction Motors The induction motor is valuable in so many applications because it combines simplicity and ruggedness. Although a good nu
Q. If an analog message that has a spectral extent of 15 kHz is sampled at three times the Nyquist rate, determine the sampling rate.
Consider the circuit of Figure (a), including a dependent source. Obtain the Thévenin equivalent at terminals a-b.
Name the materials used in case of Solder and give reasons. Solder : For soft solders tin, lead (in 50-50 ratio) alloy and for hard solders copper- zinc and silver alloy
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