Hitachi Sales & Service Engineer Interview Questions and Answers

Q1. Function of osg & safety gear
Ans. 
OSG stands for Occupational Safety and Health Gear. It includes equipment and clothing designed to protect workers from workplace hazards.
• OSG includes items such as helmets, gloves, safety goggles, ear protection, and safety harnesses.

• The function of OSG is to minimize the risk of injury or illness in the workplace.

• Safety gear is essential for workers in industries such as construction, manufacturing, and mining.

• Proper...read more
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Q2. Which type of motor use in elevator & disscrive drive.
Ans. 
Elevators typically use AC induction motors with variable frequency drives for smooth and efficient operation.
• AC induction motors are commonly used in elevators due to their reliability and ability to provide smooth and quiet operation.

• Variable frequency drives are used to control the speed and torque of the motor, allowing for precise movement and energy efficiency.

• The drive system in an elevator is responsible for co...read more
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Q1. How to you handle customer.
Ans. 
I handle customers with patience, empathy, and effective communication.
• Listen actively to understand their concerns

• Show empathy and understanding towards their situation

• Communicate clearly and effectively to address their needs

• Provide timely updates and follow-ups on their service requests
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Q2. Salary Discuss & your previous experience
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Q1. Which direction motor run
Ans. 
The direction a motor runs depends on the type of motor and the wiring configuration.
• The direction of rotation can be determined by the motor's design and the direction of the current flow.

• Some motors can run in both clockwise and counterclockwise directions depending on the wiring.

• Reversing the polarity of the power supply can change the direction of rotation in some motors.
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Q2. How made delta connection in motor terminal box
Ans. 
Delta connection in motor terminal box is made by connecting the three motor terminals in a triangular configuration.
• Connect the three motor terminals labeled U, V, and W in a triangular configuration.

• Ensure proper insulation and secure connections to prevent short circuits.

• Use appropriate tools and follow manufacturer's guidelines for wiring.

• Double check the connections before powering up the motor to avoid damage.

• Con...read more
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Q1. Tell me about your experience
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Q1. Tell me about your experience
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It is along with technical written

A topic they will given to us and we should talk it about 1 min

Q1. There two students sit each other back to back. One diagram will given one have to describe and another one have to draw hearing the describe & vice versa
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Q1. What id diode ?
Ans. 
A diode is an electronic component that allows current to flow in one direction and blocks it in the opposite direction.
• Diodes are made of semiconductor materials, such as silicon or germanium.

• They have two terminals: an anode (positive terminal) and a cathode (negative terminal).

• When a diode is forward-biased, it allows current to flow through it.

• When a diode is reverse-biased, it blocks the current.

• Diodes are commonl...read more
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Q2. Draw the diagram of diode
Ans. 
A diode is a two-terminal electronic component that allows current to flow in one direction and blocks it in the opposite direction.
• A diode has an anode and a cathode terminal.

• It is represented by a triangle with a line at the base.

• The arrowhead of the triangle points towards the cathode terminal.

• The line at the base represents the anode terminal.

• The symbol of a diode is often accompanied by its part number or label.
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Q3. Compare conductor insulator semiconductor
Ans. 
Conductor, insulator, and semiconductor are materials with different electrical conductivity properties.
• Conductor: Materials that allow the flow of electric current easily. Examples: copper, aluminum.

• Insulator: Materials that do not allow the flow of electric current. Examples: rubber, glass.

• Semiconductor: Materials with intermediate conductivity. Examples: silicon, germanium.
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Technical and field related questions. Safety related questions were also included.

Q1. Safety related questions
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Basic questions related to hydraulic, electrical, engine,load, etc.

Q1. Basic questions related to mechanical engineer. What is torque convertor. What's is force.
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Q1. Why you want to change your last job. What you expect from sandvik company.
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