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The observations from these experiments led to 'The Laws of Electromagnetic Induction'
1) 'If the magnetic flux threading through an electrical circuit changes, then an e.m.f. is induced in the circuit'.
2) 'The magnitude of the induced e.m.f. is proportional to the rate of change of the magnetic flux threading the circuit'. (Faraday's Law)
3) 'The induced e.m.f. has a direction such that the current which flows (or would flow if the circuit is completed) gives rise to a magnetic field that opposes the change in the magnetic field producing it'. (Lenz's Law)
Q. The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load current at 0.8 power factor, and 99.13%with half rated current at unity power fa
State the postulates of Bohr''s atomic model. Write any three merits and demerits.
Q. Illustrate about Transfer Functions? The transfer function is a means by which the dynamic characteristics of devices or systems are described. The transfer function is a ma
Question: (a) With the help of a clearly labeled diagram explain the functioning of a basic thermocouple. (b) Briefly explain the principle and operation of strain gauges
what is rom organization
Given the block diagram of a synchronous counter shown in Figure (a), draw the timing diagram for the first input pulses, with Q 1 , Q 2 , and Q 3 initially at 0.
Elementary Induction Machines In the discussion that followed Equation, the third possiblemethod of producing constant torque was to cause the mmf axes of stator and rotor to r
Q. For the networks shown in Figure, determine the transfer function G(s) = V o (s)/V i (s).
Q. What is their relation with gain? What are the factors affecting frequency response of an amplifier? Some amplifiers should be "flat" across a band of frequencies. In other
8085 is a one address microprocessor. In 8085 interrupts are classified by hardware and software interupts.
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