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A DC shunt motor rotating at 1560 RPM is supplied from a 240-V source. The line current supplied to the motor is equal to 27 A. The shunt field resistance of the motor is equal to 120 Ω and the armature resistance is equal to 0.6 Ω. Calculate the following:(a) The armature current of the machine.(b) The back-emf.(c) The output mechanical power and the net torque developed by the motor if its mechanical losses are equal to 280 W.
The signal m(t), whose frequency spectrum M(f ) is to be transmitted from one station to another. Let the signal be nor- malized, i.e., -1 ≤ m(t) ≤ 1. Find the bandwidth of the mod
What are the modes used in keyboard modes? 1. Scanned Keyboard mode with 2 Key Lockout. 2. Scanned Keyboard particular Error Mode. 3. Scanned Keyboard with N-key Rollover
Explain the working of BJT Amplifiers? The purpose of electronic amplifiers is essentially to increase the amplitude and power of a signal so that either useful work is done or
12. A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safety
Q. A negative impedance converter is used, as shown in Figure. Show that the load current i L is given by v in /R, which is independent of Z L . Note that since the load sees a cu
Q. Consider an RL series circuit excited by (a) v(t) = 20e -2t V, and (b) v(t) = 20 V. Determine the forced component of the voltage across the inductor for R = 2 and L = 2H.
POP PSW Instruction It is similar to above pop instruction but instead of normal register pairs it uses PSW as its operand. Program status word comprises of the content
Global Positioning System: For power utilities, the basic objective of using Global Positioning System (GPS) and GIS should be to: enhance the efficiency of transmissio
What is the difference between the unit step function u(n+4) and the time-scaled function u(2n+8)
What is memory mapping? The assignment of memory addresses to several registers in a memory chip is known as memory mapping.
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