Answer Posted / kalirajan.n
system, a prime mover drives a direct current (DC) generator
at a constant speed. The armature of the DC generator is
connected directly to the armature of a DC motor. The DC
motor drives the load equipment at an adjustable speed. The
motor speed is adjusted by adjusting the output voltage of
the generator using a rheostat to adjust the excitation
current in the field winding. The motor field current is
usually not adjusted, but the motor field is sometimes
reduced to increase the speed above the base speed. The
prime mover is usually an alternating current (AC) motor,
but a DC motor or an engine might be used instead. To
provide the DC field excitation power supply, Ward Leonard
systems usually include an exciter generator that is driven
by the prime mover.[3][
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We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.
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sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me
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