Find Interview Questions for Top Companies
Ques:- WHAT IS POWER SYSTEM?
Asked In :-
Right Answer:
A power system is a network of electrical components used to generate, transmit, and distribute electricity to consumers. It includes power plants, transmission lines, substations, and distribution systems.
Ques:- Major Causes to harm the Steam Turbine and its remedy
Asked In :-
Right Answer:
Major causes that can harm a steam turbine include:

1. **Water Hammer**: Rapid pressure changes can cause damage. Remedy: Ensure proper drainage and control of water in the steam lines.

2. **Overheating**: Excessive temperatures can lead to material failure. Remedy: Monitor and control steam temperature and pressure.

3. **Vibration**: Excessive vibration can cause mechanical failure. Remedy: Regularly check alignment and balance of the turbine.

4. **Corrosion**: Chemical reactions can weaken components. Remedy: Use corrosion-resistant materials and maintain proper water chemistry.

5. **Contamination**: Impurities in steam can damage turbine blades. Remedy: Implement proper filtration and treatment of feedwater.

6. **Mechanical Wear**: Normal wear and tear can lead to failures. Remedy: Schedule regular maintenance and inspections.
Ques:- How’s the Steam Turbine works
Asked In :-
Right Answer:
A steam turbine works by converting the thermal energy of steam into mechanical energy. High-pressure steam is directed onto blades attached to a rotor. As the steam expands and cools, it causes the rotor to spin, which then drives a generator or other machinery to produce electricity or mechanical work.
Ques:- Procedure to repair the 33MW Transformer in the Switch yard
Asked In :-
Right Answer:
1. Isolate the transformer from the power supply.
2. Conduct a visual inspection for any obvious damage or leaks.
3. Perform insulation resistance testing.
4. Drain the oil and remove the transformer cover.
5. Inspect internal components (windings, bushings, tap changer).
6. Repair or replace damaged parts as necessary.
7. Clean and dry the internal components.
8. Reassemble the transformer and refill with oil.
9. Conduct tests (power factor, winding resistance) to ensure proper function.
10. Reconnect to the power supply and monitor for any issues.
Ques:- Equipment about the knowledge of any kind
Asked In :-
Right Answer:
Equipment refers to the tools, machinery, or devices used to perform specific tasks or functions in various fields, such as construction, manufacturing, or healthcare.
Ques:- SENSORS, TEMP CONTROLLER, PID’S, SSR’S, ETC
Asked In :- ramco cements ltd,
Right Answer:
Sensors detect temperature changes, temperature controllers manage the desired temperature, PID (Proportional-Integral-Derivative) controllers adjust the output based on the error between the setpoint and the measured temperature, and SSRs (Solid State Relays) switch the heating elements on or off based on the controller's output.
Ques:- Power system
Asked In :-
Right Answer:
A power system is a network that delivers electricity from producers to consumers, consisting of generation, transmission, and distribution components.
Ques:- What do you know about hydraulics
Asked In :-
Right Answer:
Hydraulics is a technology that uses fluid under pressure to transmit force and perform work. It involves the use of liquids, typically oil or water, in a closed system to move machinery or equipment, such as in hydraulic lifts, brakes, and excavators. The key principles include Pascal's law, which states that pressure applied to a confined fluid is transmitted equally in all directions.
Ques:- Basics of workshop technology, various machines and their uses, various measuring instruments, ISO standards, Engineering Drawing etc.
Asked In :-
Right Answer:
Workshop technology involves the study of various machines and tools used in manufacturing processes. Common machines include lathes (for shaping materials), milling machines (for cutting and shaping), drills (for making holes), and grinders (for finishing surfaces). Measuring instruments include calipers, micrometers, and gauges for precise measurements. ISO standards ensure quality and safety in manufacturing. Engineering drawing is the graphical representation of objects, using symbols and dimensions to convey information about the design and specifications.
Ques:- Technical knowledge on Centrifugal fan
Asked In :-
Right Answer:
A centrifugal fan is a type of mechanical device that moves air or gas by converting rotational energy from a motor into kinetic energy. It uses a rotating impeller to draw air in at the center and expel it at a right angle through a discharge outlet, creating high pressure and airflow.
Ques:- Types of Pumps, Valves?
Asked In :-
Right Answer:
**Types of Pumps:**
1. Centrifugal Pumps
2. Positive Displacement Pumps
- Gear Pumps
- Diaphragm Pumps
- Piston Pumps

**Types of Valves:**
1. Gate Valves
2. Globe Valves
3. Ball Valves
4. Butterfly Valves
5. Check Valves
6. Pressure Relief Valves
Ques:- 2. What are different types of heat exchangers?
Asked In :- transalta,
Right Answer:
The different types of heat exchangers include:

1. Shell and Tube Heat Exchanger
2. Plate Heat Exchanger
3. Air Cooled Heat Exchanger
4. Double Pipe Heat Exchanger
5. Fin Fan Heat Exchanger
6. Spiral Heat Exchanger
7. Plate and Frame Heat Exchanger
8. Compact Heat Exchanger
Ques:- What is the criteria for the selection of Impeller? Types of impeller?
Asked In :- hitachi rail europe,
Right Answer:
The criteria for the selection of an impeller include:

1. **Fluid Properties**: Viscosity, density, and temperature of the fluid.
2. **Flow Rate**: Required flow rate and pressure head.
3. **Pump Type**: Compatibility with the type of pump (centrifugal, positive displacement, etc.).
4. **Operating Conditions**: Temperature, pressure, and environment.
5. **Efficiency**: Desired hydraulic efficiency and performance characteristics.

Types of impellers include:

1. **Open Impeller**: No shroud, suitable for fluids with solids.
2. **Closed Impeller**: Shrouded on both sides, better efficiency for clean fluids.
3. **Semi-Open Impeller**: Partially shrouded, used for a range of applications.
4. **Mixed Flow Impeller**: Combines axial and radial flow, used in specific applications.
5. **Radial Flow Impeller**: Moves fluid outward, commonly used in
Ques:- No. of System SOP in Company, Types of equipment used.
Asked In :-
Right Answer:
The number of System Standard Operating Procedures (SOPs) in a company can vary widely depending on the size and complexity of the organization, but typically there could be anywhere from 5 to 50 SOPs. The types of equipment used may include machinery, tools, diagnostic devices, and software systems relevant to the specific industry.
Ques:- Please draw any one Hydraulic circuit?
Asked In :-
Right Answer:
Here is a simple hydraulic circuit diagram:

```
+------------------+
| |
| Pump |
| |
+--------+---------+
|
|
v
+---------+
| |
| Valve |
| |
+----+----+
|
|
v
+---------+
| |
| Cylinder|
| |
+---------+
|
|
v
+---------+
| Tank |
+---------+
```

This circuit includes a pump, a valve, a cylinder, and a tank.
Ques:- What you know about CNC Programming?
Asked In :-
Right Answer:
CNC programming involves creating instructions for a Computer Numerical Control machine to automate the manufacturing process. It uses G-code and M-code to control the movement of tools and machinery, allowing for precise cutting, shaping, and finishing of materials.
Ques:- Please write any one program for controlling robot?
Asked In :-
Right Answer:
```python
import RPi.GPIO as GPIO
import time

# Set up GPIO pins
motor1_forward = 17
motor1_backward = 18

GPIO.setmode(GPIO.BCM)
GPIO.setup(motor1_forward, GPIO.OUT)
GPIO.setup(motor1_backward, GPIO.OUT)

def move_forward(duration):
GPIO.output(motor1_forward, GPIO.HIGH)
GPIO.output(motor1_backward, GPIO.LOW)
time.sleep(duration)
GPIO.output(motor1_forward, GPIO.LOW)

def move_backward(duration):
GPIO.output(motor1_backward, GPIO.HIGH)
GPIO.output(motor1_forward, GPIO.LOW)
time.sleep(duration)
GPIO.output(motor1_backward, GPIO.LOW)

try:
move_forward(2) # Move forward for 2 seconds
move_backward(2) # Move backward for 2 seconds
finally:
GPIO.cleanup()
```
Ques:- What is the role of vernier and micrometer in the designing?
Asked In :-
Right Answer:
Verniers and micrometers are precision measuring tools used in designing to obtain accurate measurements of dimensions, ensuring parts fit together correctly and meet specifications.
Ques:- Motor protection relays and circuit brakers
Asked In :-
Right Answer:
Motor protection relays are devices that monitor the electrical parameters of a motor and protect it from faults like overloads, short circuits, and phase failures. Circuit breakers are protective devices that automatically interrupt the electrical circuit in case of overload or short circuit, preventing damage to the motor and the electrical system. Together, they ensure safe operation and protection of motors in electrical systems.
Ques:- Material specification of condenser tube
Asked In :-
Right Answer:
The material specification of condenser tubes is typically made from copper, copper-nickel alloys, stainless steel, or titanium, depending on the application and environmental conditions.


Equipment refers to a broad category of tangible assets, tools, and machinery used to perform a specific function or to carry out an activity. The term is versatile and applies to a wide range of contexts, from complex industrial machines that manufacture goods to simple tools used for a hobby. Equipment is distinct from raw materials or consumables because it is typically durable, non-expendable, and used over a long period to facilitate a process rather than being transformed into a final product.

The nature and importance of equipment vary significantly across different sectors:

  • Industrial and Construction Equipment: In manufacturing and construction, equipment is the backbone of operations. This includes heavy machinery like cranes, bulldozers, and excavators, as well as production line machinery, robotics, and specialized tools. This type of equipment is crucial for large-scale operations, enabling businesses to produce goods, build infrastructure, and execute projects that would be impossible with manual labor alone.
  • Office Equipment: In a professional office environment, equipment includes devices that support administrative and communication tasks. This can range from computers, printers, and photocopiers to more modern tools like video conferencing systems and network servers. This equipment is essential for information management, communication, and the day-to-day workflow of an organization.
  • Medical Equipment: In healthcare, equipment is used for diagnosis, treatment, and patient care. This includes sophisticated devices like MRI machines, CT scanners, and surgical robots, as well as basic tools like stethoscopes and thermometers. The quality and reliability of medical equipment are paramount, as they directly impact patient health and safety.
  • Scientific and Laboratory Equipment: For research and development, equipment refers to the instruments used to conduct experiments, analyze data, and perform tests. This can include microscopes, centrifuges, spectrometers, and various measurement devices. This specialized equipment is critical for scientific discovery and technological innovation.

Regardless of the context, equipment is a key driver of productivity, efficiency, and safety. A business’s ability to operate effectively is often directly tied to the quality and availability of its equipment. Proper maintenance, regular upgrades, and strategic investment in the right tools are all vital aspects of managing a business, as they ensure that operations remain reliable and competitive.

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