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Q. A two-pole rotating machine with a singly excited magnetic field system as its stator and a rotor (that carries no coil) has a stator-coil inductance that can be approximated by L(θ) = (0.02 - 0.04 cos 2θ - 0.03 cos 4θ) H, where θ is the angle between the stator-pole axis and the rotor axis. A current of 5 A (rms) at 60 Hz is passed through the coil, and the rotor is driven ata speed,which can be controlled, ofωm rad/s.
(a) Find the values of ωm at which the machine can develop average torque.
(b) At each of the speeds obtained in part (a), determine the maximum value of the average torque and the maximum mechanical power output.
Q. A current of 65 A is measured with an analog ammeter having a probable error of ± 0.5% of full scale of 100 A. Find the maximum probable percentage error in the measurement.
Management Process of Balanced Score Card The BSC (Balanced Score Card) proposes four a new management processes which separately and in combination, contributes to linking lo
why biasing of bjt transistor is essential?
What is superposition?
Use basic circuit theory to convert the "T" circuit below into the equivalent "π". Hint: Remember to disconnect the voltage source and the load.
Pressure guage
Actual Loading Method This method is employed commonly for testing of single phase meters within laboratory. On a meter testing bench that is equipped along with several taps
Characteristics of unijunction transistor: Characteristics : The static emitter characteristic of UJT at a given inter base voltage VBB in shown in fig. From fig., it is no
Q. In a depletion MOSFET for which V P = 3 V and I DSS = 11mA, the drain current is 3mA when v DS is set at the largest value that will maintain ohmic region operation. Find v G
Q. Biasing the BJT? A simple method of biasing the BJT is shown in Figure. While no general biasing procedure that will work in all cases can be outlined, a reasonable approach
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