MCQs

An alternator converts ____________ to ______________: Alternating current, Direct current Direct current, Alternating current Electrical Energy, Mechanical Energy Mechanical energy, Electrical Energy Correct answer: 4. Mechanical energy, Electrical Energy

Cooling towers are employed in which steam power station: All of the steam power stations Where water is available in sufficient quantity Where water is not available in sufficient quantity None of these Correct answer: 3. Where water is not available in sufficient quantity

The Zero-sequence current can flow from a line to the transformer bank if the windings are in: Delta/Star Delta/Delta Star/Grounded star Grounded Star/Delta Correct answer: 4. Grounded Star/Delta The Zero-sequence current can flow from a line to the transformer bank if the windings are in Grounded Star/Delta configuration

Silica Gel is employed in which part of a transformer: Breather Conservator tank Core Winding Correct answer: 1. Breather Explanation: Silica gel is the chemical that is employed in breather of transformer due to its strong affinity for water molecules. The basic function of Breather in the electrical transformer is to absorb moisture and silica … Read more

The synchronous generator will supply power to a purely resistive load at which power factor: Lagging Leading Unity Zero Correct answer: 3. Unity Explanation: The synchronous generator or alternator will supply power to a purely resistive load at unity power factor.

The Alternator is also known as: Induction generator Induction motor Synchronous generator Synchronous motor Correct answer: 3. Synchronous generator

As long as no gate current flows to the cathode via the gate terminal: A thyristor will allow if it has positive anode voltage A thyristor will block it has positive anode voltage Any of these None of these Correct answer: 2. A thyristor will block it has positive anode voltage Explanation: A thyristor will … Read more

HVDC stands for: High voltage directional current Hybrid volume direct current High voltage direct current Hybrid volume directional current Correct answer: 3. High voltage direct current HVDC stands for high voltage direct current. HVDC is also sometimes referred to as a power superhighway or electrical superhighway.

The differential protection of delta/delta power transformers is achieved using which of the following connection of current transformer: Delta-Star connection Star-Delta connection Delta-Delta connection Star-Star connection Correct answer: 4. Star-Star connection Explanation: For the differential protection of delta/delta power transformers the current transformer is connected in star-star configuration. Similar MCQs: The current transformers that are … Read more