CivicMinds Interview Questions and Answers

The blasting nozzle size depends on the type of blasting being done and the material being blasted.

• The blasting nozzle size can range from 1/8 inch to 1 inch or more.

• For fine blasting, a smaller nozzle size is used, while for heavy-duty blasting, a larger nozzle size is used.

• The material being blasted also affects the nozzle size, as harder materials require a larger nozzle size.

• The blasting pressure and distance from the surface being blasted also play a role in determining ...read more

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

• Compressors are commonly used in various industries, including painting, to supply compressed air for tools and equipment.

• They work by drawing in air and then compressing it to a higher pressure before releasing it.

• Compressors can be powered by electricity, gasoline, or diesel engines.

• They come in different types, such as reciprocating, rotary screw, and centrifugal compressors.

• Exa...read more

CT stands for Current Transformer, a device used to measure electrical current.

• CT is a type of transformer that steps down high current to a lower, measurable level.

• It is commonly used in power systems to measure current flowing through a circuit.

• CTs are also used for protection purposes, such as detecting overcurrent or short circuits.

• CTs can be either solid-core or split-core, with the latter being easier to install.

• CTs are rated by their current ratio, which indicates the ...read more

Types of transformers include power transformers, distribution transformers, autotransformers, isolation transformers, and instrument transformers.

• Power transformers are used to step up or step down voltage in power transmission systems.

• Distribution transformers are used to step down voltage for distribution to consumers.

• Autotransformers have a single winding and are used for voltage regulation.

• Isolation transformers provide electrical isolation between the primary and second...read more

IR test stands for Insulation Resistance test which is used to measure the resistance of insulation material.

• IR test is used to check the quality of insulation material used in electrical equipment.

• It helps to detect any insulation failure or breakdown in the equipment.

• The test involves applying a high voltage to the insulation material and measuring the current flowing through it.

• The measured resistance value is compared with the standard value to determine the quality of in...read more