Sandvik Mining and Rock Technology Interview Questions and Answers

Q1. What is a torque converter?
Ans. 
A torque converter is a fluid coupling that transfers power from the engine to the transmission in an automatic vehicle.
• It allows the engine to keep running while the vehicle is stopped

• It multiplies torque to increase power output

• Consists of three main components: impeller, turbine, and stator

• Commonly found in automatic transmission vehicles
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Q2. What is the process by which transmission works?
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Transmission works by transferring power from the engine to the wheels, allowing the vehicle to change speed and direction.
• Transmission uses gears to control the power flow from the engine to the wheels

• The driver selects the appropriate gear based on speed and terrain

• Automatic transmissions use a torque converter to transfer power smoothly

• Manual transmissions require the driver to engage and disengage gears using a clu...read more
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Q3. How many types of differential?
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There are mainly three types of differentials: open differential, limited-slip differential, and locking differential.
• Open differential allows wheels to spin at different speeds, useful for regular driving conditions.

• Limited-slip differential limits the speed difference between wheels, providing better traction.

• Locking differential locks both wheels together, ensuring equal power distribution for maximum traction.
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Q4. How many types of hydraulic pump?
Ans. 
There are mainly two types of hydraulic pumps: gear pumps and piston pumps.
• Gear pumps: simple design, cost-effective, suitable for low to medium pressure applications

• Piston pumps: higher efficiency, suitable for high pressure applications, more complex design

• Other types include vane pumps, radial piston pumps, and axial piston pumps
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Q5. How can I check if a potentiometer is working properly?
Ans. 
To check if a potentiometer is working properly, you can use a multimeter to measure the resistance across its terminals.
• Set the multimeter to the resistance measurement mode.

• Connect the multimeter leads to the outer two terminals of the potentiometer.

• Slowly turn the potentiometer knob and observe the resistance value on the multimeter.

• The resistance should change smoothly and continuously as you turn the knob.

• If the r...read more
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Q1. How many years of experience do you have?
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Q2. Do you have any medical conditions?
Ans. 
No medical conditions.
• I do not have any medical conditions.

• I am in good health and able to perform the duties of a Service Engineer without any limitations.
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The duration was 50 minutes and included 55 questions focused on technical areas related to mechanical, electrical, and hydraulic systems, as well as some questions on safety and reasoning.

Q1. Asking about hydraulc,pneumatic and electrical circuit diagram on the sandvik machine.
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Q2. Other machine related question also asking.Sandvik and epiroc drill working procedure.
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Q3. Asking all thing about drll machine and sales and service.
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Q1. Asking about your CTC and other document's and family background.
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Q2. Third party verification is impartant point.
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Q1. Tell me how electrical circuits are work
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Electrical circuits allow the flow of electric current through conductive paths, powering devices and enabling functionality.
• A circuit consists of a power source (like a battery) that provides voltage.

• Conductors (wires) connect components, allowing current to flow.

• Components like resistors, capacitors, and switches control the flow and behavior of electricity.

• In a series circuit, components are connected end-to-end, wh...read more
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Q1. Can you please explain about yourself?
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Q1. If vehicles unable to start how you will troubleshoot it.
Ans. 
I would first check the battery, then the starter motor, and finally the ignition system.
• Check the battery for charge and connections

• Inspect the starter motor for any issues

• Test the ignition system for spark

• Check for any loose wires or connections
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Q2. What is gear pump and displacement pump.
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Gear pump and displacement pump are types of positive displacement pumps used to move fluids by trapping a fixed amount of fluid and forcing it through the pump.
• Gear pump uses rotating gears to move fluid, while displacement pump moves fluid by changing the volume of a chamber.

• Gear pump is more compact and efficient, while displacement pump is more accurate and suitable for high pressure applications.

• Examples of gear p...read more
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