Sraco Senior Electrical Technician Interview Questions and Answers

The question covers power factor of transformer, types of DC machine, working principle of AC alternator, and DC motors.

• Power factor of a transformer is the ratio of real power to apparent power.

• Types of DC machines include DC motors and DC generators.

• AC alternators work on the principle of electromagnetic induction to convert mechanical energy into electrical energy.

• DC motors convert electrical energy into mechanical ...read more

Lighting levels for indoor and outdoor areas are determined based on the purpose of the space and the activities that take place.

• Indoor lighting levels are typically measured in foot-candles or lux

• Outdoor lighting levels are typically measured in lumens per square meter

• Calculation procedures involve determining the required illuminance level for the space and selecting appropriate light fixtures and bulbs

• Factors such a...read more

Cable glands are used to secure and seal cables in various applications based on the area of installation.

• Cable glands are used in hazardous areas to prevent the entry of flammable gases and liquids.

• In outdoor applications, cable glands are used to protect cables from moisture and dust.

• In industrial settings, cable glands are used to secure cables and prevent them from being pulled out.

• Different types of cable glands a...read more