10+ MASCO Interview Questions and Answers

Yield point is the stress at which a material begins to deform plastically.

• Yield point is the point on a stress-strain curve where the material starts to deform plastically.

• It is the stress at which the material no longer behaves elastically.

• The yield point is important in determining the strength and ductility of a material.

• The yield point can be determined by plotting a stress-strain curve and finding the point where the curve starts to deviate from a straight line.

• Examples...read more

The color code of 3-phase supply varies depending on the country and electrical standards.

• In the United States, the color code for 3-phase supply is typically black, red, and blue.

• In Europe, the color code is often brown, black, and gray.

• Other countries may have different color codes, so it is important to consult local electrical standards.

• The color coding helps identify the different phases and ensure proper electrical connections.

Star and delta connections are two common methods used to connect three-phase electrical systems.

• Star connection, also known as Wye connection, is formed by connecting all three phases together at a common point and connecting the other ends to the respective loads.

• Delta connection, also known as Mesh connection, is formed by connecting the end of one phase to the start of the next phase in a circular loop.

• Star connection provides a neutral point and is commonly used in power...read more

4-stroke engine and diesel Otto cycle explained

• A 4-stroke engine completes a cycle in four strokes: intake, compression, power, and exhaust

• Diesel Otto cycle is a thermodynamic cycle used in diesel engines

• Diesel Otto cycle consists of four processes: intake, compression, power, and exhaust

• The main difference between gasoline and diesel engines is the way fuel is ignited

• Gasoline engines use spark plugs to ignite the fuel, while diesel engines use compression to ignite the fuel

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.

• The primary winding is connected to the power source, while the secondary winding is connected to the load.

• When an alternating ...read more

Voltage neutral refers to the point in an electrical system where the voltage is close to zero.

• Voltage neutral is the reference point in an electrical circuit where the voltage is considered to be zero.

• It is typically the midpoint between the positive and negative terminals of a power source.

• In a balanced three-phase system, the neutral conductor carries the current resulting from the imbalance of the three phases.

• The voltage neutral is important for ensuring proper functioni...read more

The 14th law of management is the law of balance.

• The law of balance states that there should be a balance between the needs of the organization and the needs of the individuals working in it.

• It emphasizes the importance of maintaining a balance between the different aspects of management such as planning, organizing, staffing, directing, and controlling.

• The law of balance also stresses the need for a balance between short-term and long-term goals, as well as between efficienc...read more

Improving power factor involves reducing reactive power and increasing the ratio of real power to apparent power.

• Install power factor correction capacitors to offset reactive power.

• Avoid using inefficient or oversized motors and equipment.

• Implement energy-efficient lighting systems.

• Optimize the operation of power factor correction equipment.

• Educate employees on energy conservation practices.

An auto transformer is a type of transformer that has a single winding with multiple taps.

• Auto transformers have a common winding for both primary and secondary coils.

• They are used to step up or step down voltage levels.

• Auto transformers are more efficient and compact compared to conventional transformers.

• They are commonly used in power transmission and distribution systems.

• Example: A 220V to 110V auto transformer can be used to step down voltage for appliances.

• Example: A 110...read more

Concurrent force is the combination of two or more forces acting on a single point simultaneously.

• Concurrent force is a vector quantity.

• The resultant of concurrent forces can be found using the parallelogram law of vector addition.

• Examples of concurrent forces include the forces acting on a seesaw or a crane.

• The point of intersection of the concurrent forces is called the point of concurrency.

There are several types of beams used in construction, including I-beams, H-beams, and T-beams.

• I-beams are also known as W-beams and are shaped like an I

• H-beams are shaped like an H and are commonly used in construction

• T-beams are shaped like a T and are used in construction for bridges and other structures

• Other types of beams include box beams, channel beams, and angle beams

Parallelogram law states that the sum of the squares of the diagonals of a parallelogram is equal to the sum of the squares of its sides.

• Parallelogram law is used in vector addition and subtraction.

• It is also known as the parallelogram identity.

• The law can be expressed as: AB^2 + BC^2 + 2(AB)(BC)cos(θ) = AC^2

• Where AB, BC, and AC are sides of the parallelogram and θ is the angle between AB and BC.

• For example, if AB = 3 and BC = 4, and the angle between them is 60 degrees, then...read more

AVR (Automatic Voltage Regulator) is a device used to maintain a constant voltage level for electrical equipment.

• AVR monitors the output voltage of a generator and adjusts the excitation current to maintain a constant voltage level.

• It helps protect electrical equipment from damage due to voltage fluctuations.

• AVR is commonly used in power plants, industrial facilities, and backup generators.

• Examples of AVR brands include Stamford, Leroy-Somer, and Mecc Alte.