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The design for a 1/8 -hp, two-pole, 115-V universal motor gives the effective resistances of the armature and series field as 4 % and 6 %, respectively. The output torque is 0.17 N-m when the motor is drawing rated current of 1.5 A (rms) at a power factor of 0.88 at rated speed. Find:
a. The full-load efficiency.
b. The rated speed.
c. The full-load copper losses.
d. The combined windage, friction, and iron losses.
e. The motor speed when the rms current is 0.5 A, neglecting phase differences and saturation.
Why is V2 and the 2kO resistor included in the KCL equation at node V1. Similarly, why is V1 and the 3kO resistor included in the KCL equation at node V2.
Consider a five bit Johnsoncounter, initialized to "00000", provide the complete table for Sequence of states of the counter dissipation of the flip-flops
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The rate of heat loss from the air in the duct is estimated to be 300 W. Determine the power rating of the electric resistance heating element.
Sheet of charge above a conducting plane. An infinite sheet of charge with charge density Ps is located at a distance d above a very thick conductor, as in Figure 5.37. Calculate the electric field intensity everywhere in space.
Calculate the frequency and line voltage of a delta-connected generator with the following characteristics:
What is the output torque of the motor at the rated conditions? Express the answer both in newton-meters and in pound-feet.
Consider a 1.5 MVA, 4.16 kV, 3φ. 60 Hz synchronous generator. When operating at full load and rated voltage at a power factor of 0.9 lag, WHAT is the stator current in phase b[magnitude & angle]
Design the minimum-cost circuit and compare its cost with combined costs of two circuits that implement f and g separately. Assume that the input variables are available in both uncomplemented and complemented forms.
How long would it take to complete a read operation in a MT48LC32M16A2 with a 120 MHz clock and a value of 002AH in the mode register
Please explanation how a Parallel RLC Filter circuit behave at Low Frequencies, Resonant Frequency and High Frequencies
Design a passive fourth-order Butterworth filter with cutoff frequency of 2000 radians per second and an output resistor of 1000 ohms.
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