Alstom Transportation Industrial Engineer Interview Questions and Answers

There are three types of multimeters: analog, digital, and clamp.

• Analog multimeters use a needle to display readings.

• Digital multimeters display readings on a digital screen.

• Clamp multimeters measure current by clamping around a wire.

• Examples of multimeter brands include Fluke, Klein Tools, and Extech.

LV cables typically have a voltage rating of 600V or less in construction use.

• LV cables are used for low voltage applications in construction.

• The voltage rating of LV cables is typically 600V or less.

• LV cables are commonly used for power distribution, lighting, and control circuits.

• Examples of LV cables include THHN, XHHW, and MC cables.

Yellow lights are used in the field for safety and warning purposes.

• Yellow lights are used to indicate caution or warning in the field.

• They are often used in construction sites, road work, and other hazardous areas.

• Yellow lights can also be used to signal the presence of heavy machinery or equipment.

• They are an important safety measure to prevent accidents and injuries.

• Yellow lights are easily visible and catch the att

AC voltage is alternating current that changes direction periodically, while DC voltage is direct current that flows in one direction only.

• AC voltage changes direction periodically, while DC voltage flows in one direction only

• AC voltage is used in household appliances, while DC voltage is used in electronic devices

• AC voltage is measured in volts RMS, while DC voltage is measured in volts

• Examples of AC voltage sources i...read more

Star connection is used in motors to reduce the starting current and increase the torque.

• Star connection reduces the voltage applied to each winding, resulting in lower starting current.

• It also increases the torque produced by the motor.

• Star connection is commonly used in motors with high starting current, such as induction motors.

• It is also used in motors that require a high starting torque, such as compressors and pu

There are several types of cables used in construction, including power cables, control cables, communication cables, and more.

• Power cables are used to transmit electrical power, such as high voltage cables for transmission lines and low voltage cables for distribution networks.

• Control cables are used to transmit signals for controlling machinery and equipment, such as motor control cables and instrumentation cables.

• Co...read more

CT stands for Current Transformer and CPT stands for Capacitor Potential Transformer.

• CT is used to measure the current flowing in a circuit and step down the current to a level that can be measured by instruments.

• CPT is used to measure the voltage of a circuit and step down the voltage to a level that can be measured by instruments.

• Both CT and CPT are types of transformers used in electrical systems.

• CT and CPT are comm...read more