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Uninterruptible Power Supplies (UPSs) are widely used for power conditioning applications, whereby the load is to be supplied with current and voltage waveforms containing minimal disturbance. A UPS also provides emergency power to critical loads in case of utility mains failure, and as such...

Although traditional per-phase circuit has been widely used in steady-state analysis and design of induction motors, it is not appropriate to predict dynamic performance of the motor, In order to understand and analyze vector control of induction motors, the dynamic model is necessary....

Production by pressing in its many forms together with sheet metal working constitutes one of the most absorbing branches of production engineering, and one which plays a vital role in domestic life, being largely responsible for many of the comforts which have been brought within the reach of...

Blasting is the process of fracturing material through the detonation of industrial explosives placed into drilled holes suitably located to a free surface. Every blast hole containing a calculated amount of explosive charge undergoes impulsive loading when detonated and results in the dynamic...

The study was aimed at devising new Construction and Maintenance Contract methods for gravel roads that are based on “Lean Thinking and Value Management” philosophies in Zambia. The study revealed that currently in Zambia, Gravel Road Construction projects are commonly being realised through the...

As with any business organization in a competitive market, the financial viability depends on the ability to maximize its returns at minimum costs. The problem of minimizing the total costs on transmission lines wayleave maintenance or bush clearing is one of minimizing the costs on labour,...