A 3-phase, 415V load of 50 kW with a power factor of 0.85 lagging is supplied via a multi-core copper cable over a distance of 100 meters. If the permitted voltage drop is 2.5%, what is the maximum allowable voltage drop in volts? Answer: Permitted Voltage Drop =
A 3-phase, 11 kV transmission line delivers 5 MW at 0.8 lagging power factor. The line resistance and reactance per phase are 2 Ω and 5 Ω respectively. The voltage regulation is approximately: a) 5.2% b) 8.7% c) 12.4% d) 15.1%
To maximize your score, focus your preparation on the following high-yield engineering domains: 1. Power Distribution and Substations sewa electrical engineer exam questions pdf portable
Questions frequently test knowledge of specific SEWA regulations regarding electrical installation layout, service connections, and power requirements. 2. Protection and Earthing Systems Understanding TN-S, TN-C-S, and TT systems.
The SEWA exam evaluates core engineering knowledge, practical field applications, and local regulatory compliance. A 3-phase, 415V load of 50 kW with a power factor of 0
A score of 70% is often required to qualify.
: A collection of questions covering transformer room requirements, power factor correction, and breaker sizing. Key Topics to Study The line resistance and reactance per phase are
Typically consists of multiple-choice questions (MCQs), short technical definitions, and situational engineering problems. Duration: Generally 2 to 3 hours.
B (Verify earth fault loop impedance)
Cable sizing factors (voltage drop constraints, derating factors for high ambient temperatures). Cable jointing and termination methods.