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For a 45-kVA, three-phase, wye-connected, 220- V synchronous machine at rated armature current, the short-circuit load loss (total for three phases) is 1.80 kWat a temperature of 25°C. The dc resistance of the armature at this temperature is 0.0335 per phase. Compute the effective armature ac resistance in per unit and in ohms per phase at 25°C.
Prepaid Metering Prepaid metering is the state of art for single and three-phase although current metering, and should be implemented through utilities desirous of protecting
Draw a relay construction diagram and briefly explain the operation of a relay. Define the terms normally open and normally closed. Define the terms Set and Reset for relays.
1. Design four (4) different 5 volt DC power supplies to operate from 230 volts AC. The four power supplies are to have the same full wave rectifier with capacitive filte
Q. What do you mean by communication channel? The communication channel (transmissionmedium) is the physicalmediumthat is utilized to send the signal from the transmitter to th
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Give the properties of PVC. PVC- It is acquired from polymerisation of hydrogen chloride and acetylene in the presence of a catalyst as peroxides at about 50 0 C. Properties
Simulate and compare BER of QPSK system and 4-QAM system without grey coding Eb/No=0.2.4.6.8.10
Common channel signalling Signalling systems link the variety of switching systems, transmission systems and subscriber equipments in telecommunication network to enable
Describe soldering materials and their uses. The process of joining two or more metals is termed as soldering. An alloy of two or more metals of low melting point utilized for
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