SAAB ENGINEERING Interview Questions and Answers

Nuclear power plants have the minimum running cost.

• Nuclear power plants have low fuel costs as they use uranium, which is inexpensive and abundant.

• They require less fuel compared to fossil fuel power plants.

• Nuclear power plants have high initial construction costs but lower operating costs in the long run.

• Renewable energy sources like solar and wind have no fuel costs, but their initial setup costs are higher than nuclear power plants.

The hydroelectric power plant has the highest area required.

• Hydroelectric power plants require large areas of land for reservoirs and dams.

• The area required for a power plant depends on factors such as the size of the reservoir and the capacity of the plant.

• Other types of power plants like solar or wind may require less land area compared to hydroelectric plants.

• Examples of large hydroelectric power plants include the Three Gorges Dam in China and the Itaipu Dam in Brazil and...read more

The unit of capacitance is the farad (F).

• The unit of capacitance measures the ability of a capacitor to store charge.

• It is named after the English physicist Michael Faraday.

• Common subunits of capacitance include microfarads (μF) and picofarads (pF).

The electrodes used in arc heating are typically made of tungsten or carbon.

• Tungsten and carbon are commonly used materials for arc heating electrodes.

• Tungsten electrodes are preferred for high-temperature applications.

• Carbon electrodes are suitable for lower temperature operations.

• Other materials like graphite or metal alloys may also be used depending on the specific requirements.

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers work on the principle of electromagnetic induction.

• They consist of two or more coils of wire, known as windings, which are wound around a common magnetic core.

• The primary winding is connected to the input voltage source, while the secondary winding is connected to the load.

• When an alternating current (AC) flows through the primary ...read more

The unit of magnetic flux is the Weber (Wb).

• The unit of magnetic flux is named after the German physicist Wilhelm Eduard Weber.

• One Weber is equal to one Tesla multiplied by one square meter.

• The Weber is a derived unit in the International System of Units (SI).