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In PERT,activities with zero Slack is called critical activities which will form the critical path

Normal cost is the cost involved in completing an activity in minimum time duration (normal time duration)

ABC is a inventory material control technique

The instantaneous voltage across the inductor is expressed as the product of inductance and rate of change of current through it. Power is expressed as the product of current and voltage. Hence instantaneous power in an inductor is proportional to the product of instantaneous current and rate of change of current through it.

Superposition theorem can be applied for both AC as well DC excitation to calculate the voltage or current calculations. It holds for both DC and AC excitation, if the circuit is linear. But superposition theorem is not applicable for power calculations.

When response to excitation is constant even though we interchange the excitation and responses then the reciprocity theorem is verified for the given network.

As a shunt field current If decreases, f also decreases and the speed rises as speed is inversely proportional to flux.
A DC shunt motor is used in applications where a constant speed and high torque is required, such as a paper manufacturing unit, Lathe Machines, Centrifugal Pumps, Fans, Lifts, Weaving Machine, Spinning machines, Blowers Conveyors etc.

Capacitance if farads: C

The permittivity of dielectric : e

Area of plate overlap in square meters: A

Distance between plates in meters: d

[
C = frac{e A}{d}
]

A ?pony motor? is used to start a much larger motor or to keep a really big bearing assembly moving below operating speeds when the equipment is idle.

Synchronous motors are AC motors. They have two supplies one is given to the stator of the motor which is single or three phase ac supply and other one is given to the rotor of the motor which is constant dc supply. Since the rotor is rotating part we use slip rings and carbon brushes to give supply to the rotor.

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