Lakshmi Machine Works Technician Interview Questions and Answers

To look for a short circuit, check for any abnormal connections or damaged wires causing a direct path for current flow.

• Inspect all wiring and connections for signs of damage or wear

• Use a multimeter to test for continuity and resistance in the circuit

• Look for any burnt or melted components indicating a short circuit

• Check for any loose connections or exposed wires that could be causing a short circuit

There are two types of current: direct current (DC) and alternating current (AC).

• Direct current (DC) flows in one direction only, typically produced by batteries or power supplies.

• Alternating current (AC) periodically changes direction, commonly used in household electrical systems.

• DC is used in electronic devices like computers and cell phones, while AC powers appliances and lighting.

• Examples of DC include car batteri...read more

Voltage value L-L is the voltage between two phases, while L-N is the voltage between a phase and neutral.

• Voltage value L-L is also known as line-to-line voltage.

• Voltage value L-N is also known as line-to-neutral voltage.

• L-L voltage is typically higher than L-N voltage in a three-phase system.

• For example, in a 120/208V three-phase system, the L-L voltage is 208V, while the L-N voltage is 120V.

A step-up transformer increases voltage while a step-down transformer decreases voltage.

• Step-up transformer increases voltage from primary to secondary winding

• Step-down transformer decreases voltage from primary to secondary winding

• Step-up transformers are used in power transmission to increase voltage for long-distance transmission

• Step-down transformers are used in power distribution to decrease voltage for consumer u...read more

The interview questions cover motor starters, layout, power factor, troubleshooting with megger, and fault finding.

• Motor starters are used to control the starting and stopping of motors.

• There are different types of motor starters such as direct-on-line, star-delta, and soft starters.

• The power layout of starters includes power supply, motor, and control circuit.

• The control layout of starters includes start, stop, and ov...read more