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Q. Consider a conducting loop of length l and width w, as shown in Figure, rotated about its axis (shown by the broken line) at a speed of ωm rad/s under the influence of a magnetic field B.
(a) Obtain an expression for the induced emf, assuming the angle θm is zero at t = 0 and θm = ωmt .
(b) If a resistor R is connected across terminals a-a , explainwhat happens and howthe principle of energy conservation is satisfied.
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Q. Explain working of Single-Phase Induction Motors? For reasons of simplicity and cost, a single-phase power supply is universally preferred for fractional-horsepower motors.
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Q. Consider the 4-bit R-2R ladder D/A converter with V ref =-10 V. Determine the analog output voltage when the binary input code is 1100. Also, find what reference voltage is to
Q. Figure gives the frequency-response graphs for a 709 op amp. Choose compensating components for the circuit to have a gain of 100 and a frequency response of up to 100 kHz.
What is the main thing to look for in calculations of air gaps?
Dielectric materials are (A) Insulating materials. (B) Semiconducting materials. (C) Magnetic materials. (D) Ferroelectric materials. Ans:
Calculate the current flow in 30Ω resistor for the circuit in figure using Thevenin's Theorem.
With neat diagrams explain the configuration of a step-by-step switching system
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