10+ Mathrithms Technologies Interview Questions and Answers

Junior engineer in Electrical maintenance plays a crucial role in ensuring smooth functioning of electrical systems and providing necessary facilities to the company.

• Assist in the maintenance and repair of electrical systems and equipment

• Perform routine inspections to identify potential issues and ensure compliance with safety regulations

• Collaborate with senior engineers to develop and implement maintenance plans

• Provide technical support to other departments as needed

• Ensure a...read more

A milling machine is a tool used to remove material from a workpiece by rotating a cutting tool.

• Specifications include the size of the table, spindle speed, and horsepower of the motor.

• Construction includes a base, column, knee, saddle, table, spindle, and overarm.

• Working process involves securing the workpiece to the table, selecting the appropriate cutting tool, and moving the table and spindle to remove material.

• Examples of milling machines include vertical, horizontal, an...read more

IGBT, MOSFET, and SCR are all types of power electronic devices used for switching and controlling electrical power.

• IGBT stands for Insulated Gate Bipolar Transistor and is commonly used in high power applications such as motor drives and inverters.

• MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor and is commonly used in low power applications such as mobile devices and computers.

• SCR stands for Silicon Controlled Rectifier and is commonly used in AC power co...read more

Instrumentation refers to the use of instruments or devices to measure and control various physical variables.

• Instrumentation involves the use of sensors, transducers, and other devices to measure physical variables such as temperature, pressure, flow rate, and level.

• The data collected by instrumentation is used to monitor and control industrial processes, scientific experiments, and other systems.

• Examples of instrumentation include thermocouples, pressure gauges, flow meters...read more

Different types of loads applied on long and short steel columns

• Long columns are more susceptible to buckling under compressive loads

• Short columns are more susceptible to crushing under compressive loads

• Long columns are more likely to experience bending under lateral loads

• Short columns are more likely to experience shear under lateral loads

• Examples of loads include dead load, live load, wind load, seismic load, etc.

Questions related to electrical engineering - transformer, motor principle and types of motors.

• Transformer works on the principle of electromagnetic induction to transfer electrical energy from one circuit to another.

• Motor principle is based on the interaction between magnetic fields and electric currents to produce rotational motion.

• Types of motors include AC motors, DC motors, stepper motors, servo motors, etc.

Steel sections are structural shapes made from steel for construction purposes.

• I-beams

• H-beams

• C-channels

• Angle sections

• T-sections

• Z-sections

• Box sections

• Circular sections

Reinforcement of a cantilever beam is positioned at the bottom to resist tension forces.

• Reinforcement is placed at the bottom of the cantilever beam to resist tension forces.

• The reinforcement helps in preventing the beam from bending or breaking under load.

• Examples of reinforcement materials include steel bars or mesh.

• Proper positioning and sizing of reinforcement is crucial for the structural integrity of the beam.

Concrete sleepers are used in railway crossings.

• Concrete sleepers are preferred over wooden sleepers in railway crossings due to their durability and strength.

• Concrete sleepers help in maintaining the stability and alignment of the tracks at railway crossings.

• Examples of concrete sleepers used in railway crossings include monoblock sleepers and twin block sleepers.

Shear force and bending moment diagrams show internal forces and moments in a fixed beam.

• Shear force diagram shows the variation of shear force along the length of the beam.

• Bending moment diagram shows the variation of bending moment along the length of the beam.

• At supports of a fixed beam, shear force is maximum and bending moment is zero.

• At midspan of a fixed beam, bending moment is maximum and shear force is zero.

Different types of gearboxes include manual, automatic, CVT, DCT, and sequential gearboxes.

• Manual gearbox: Requires manual shifting of gears by the driver.

• Automatic gearbox: Shifts gears automatically without driver input.

• CVT (Continuously Variable Transmission): Offers seamless gear ratio changes.

• DCT (Dual Clutch Transmission): Utilizes two clutches for faster gear shifts.

• Sequential gearbox: Gears are selected in sequence rather than in an H-pattern.

Angle of projections in engineering drawing refer to the angles at which an object is viewed in a 2D representation.

• Angle of projection in engineering drawing is the angle at which the object is viewed from the observer's position.

• There are two types of angles of projection - First Angle Projection and Third Angle Projection.

• In First Angle Projection, the object is placed in the first quadrant and the plane of projection is between the observer and the object.

• In Third Angle P...read more

Iron carbon diagram shows the phases of iron and carbon at different temperatures.

• Iron carbon diagram is a graphical representation of the phases of iron and carbon at different temperatures.

• It shows the relationship between temperature, carbon content, and the phases present in the material.

• The diagram typically includes regions for austenite, ferrite, cementite, and pearlite.

• It is used in metallurgy to understand the behavior of iron-carbon alloys during heating and cooling...read more

Heat treatment is a process used to alter the physical and sometimes chemical properties of a material through heating and cooling.

• Heat treatment involves heating a material to a specific temperature, holding it at that temperature for a certain amount of time, and then cooling it at a controlled rate.

• The purpose of heat treatment is to improve the material's hardness, strength, toughness, ductility, and other properties.

• Common heat treatment processes include annealing, temp...read more

Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.

• Ohm's Law is represented by the formula V = IR, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• It is named after the German physicist Georg Simon Ohm who first formulated it in 1827.

An induction motor is a type of AC motor where power is supplied to the rotor by electromagnetic induction.

• Induction motors are commonly used in various applications such as pumps, fans, compressors, and conveyor systems.

• They do not require any physical connection between the rotor and the stator.

• The rotating magnetic field in the stator induces current in the rotor, causing it to rotate.

• Induction motors are efficient, reliable, and have low maintenance requirements.

• Examples ...read more

Gears are mechanical devices used to transmit motion and power between rotating shafts.

• Gears have teeth that mesh together to transfer motion and power

• They can change the speed, torque, and direction of rotation

• Common types of gears include spur gears, helical gears, and bevel gears

A bearing is a machine element that allows one part to support another and reduce friction between moving parts.

• Bearing is used to support rotating or moving parts within a machine.

• It reduces friction between moving parts, allowing for smooth operation.

• There are different types of bearings such as ball bearings, roller bearings, and plain bearings.

• Examples of bearings include wheel bearings in cars and bearings in electric motors.