10+ PHD Research Scholar Interview Questions and Answers

Increasing coefficient of friction in rolling process will result in increased resistance and reduced efficiency.

• Increased coefficient of friction leads to increased resistance between the rolling object and the surface it is rolling on.

• This increased resistance results in more energy being lost as heat and less energy being transferred to useful work.

• The rolling process becomes less efficient as more force is required to overcome the increased friction.

• Higher friction can al...read more

CO2 is IR active. IR region ranges from 4000-400 cm-1. Esters have a peak in the 1750-1735 cm-1 region.

• CO2 has a linear structure and has a dipole moment, making it IR active

• IR region is divided into three regions: near-IR, mid-IR, and far-IR

• CO2 absorbs IR radiation in the mid-IR region, specifically around 2349 cm-1

• Esters have a peak in the carbonyl stretching region, which is around 1750-1735 cm-1

Stress in engineering refers to the internal force experienced by a material or structure due to external loads.

• Stress is a measure of the intensity of the internal forces within a material or structure.

• It is caused by external loads or forces acting on the material or structure.

• Stress can be categorized into different types such as tensile, compressive, shear, and bending stress.

• Tensile stress occurs when a material is being pulled apart, compressive stress occurs when a mat...read more

Aluminium is less suitable for laser cutting due to its high reflectivity and thermal conductivity.

• Aluminium has a high reflectivity, which means it reflects a significant amount of laser energy instead of absorbing it.

• Its high thermal conductivity causes the heat generated during laser cutting to quickly dissipate, making it difficult to achieve precise cuts.

• Aluminium also forms an oxide layer on its surface, which further hinders the absorption of laser energy.

• Compared to o...read more

The enzyme responsible for excess ripening of fruit is called ethylene.

• Ethylene is a natural plant hormone that triggers the ripening process.

• It is produced by the fruit itself and can also be produced by other fruits nearby.

• Exposure to ethylene gas can cause fruits to ripen faster than normal.

• Some fruits are more sensitive to ethylene than others, such as bananas and tomatoes.

• Controlling ethylene levels is important for preserving the shelf life of fruits and vegetables.

Grubbs Catalyst is a type of ruthenium-based catalyst used in organic chemistry for olefin metathesis reactions.

• Grubbs Catalyst is named after its inventor, Robert H. Grubbs.

• It is used in organic chemistry for olefin metathesis reactions, which involve breaking and reforming carbon-carbon double bonds.

• The catalyst is highly efficient and selective, allowing for the synthesis of complex organic molecules.

• Grubbs Catalyst has found applications in various fields, including pharm...read more

The total work done in Carnot cycle is equal to the area enclosed by the cycle on a PV diagram.

• The Carnot cycle is a theoretical thermodynamic cycle that consists of four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression.

• The total work done in the cycle is equal to the difference between the work done during the isothermal expansion and the work done during the isothermal compression.

• The work done during the iso...read more

The people satisfaction with my bank account is influenced by various factors such as customer service, interest rates, fees, and convenience.

• Customer service plays a crucial role in determining people's satisfaction with their bank account.

• Interest rates offered by the bank can impact how satisfied customers are with their account.

• Fees charged by the bank for various services can also affect people's satisfaction levels.

• Convenience factors such as online banking options, ATM...read more

C3 plants use only the Calvin cycle to fix carbon while C4 plants use both the Calvin cycle and the C4 pathway.

• C3 plants are more common and include rice, wheat, and soybeans.

• C4 plants are more efficient in hot and dry environments and include corn, sugarcane, and sorghum.

• C4 plants have a unique leaf anatomy with two types of photosynthetic cells: mesophyll and bundle sheath cells.

• C3 plants have a simpler leaf anatomy with only one type of photosynthetic cell.

• C4 plants have a...read more

Our bank transaction system is a secure online platform that allows customers to manage their accounts, transfer funds, and make payments.

• Online platform for account management

• Secure transactions

• Ability to transfer funds and make payments

The working principle of an equipment

• Identify the purpose of the equipment

• Understand the components and their functions

• Determine the energy source and how it is converted

• Consider any safety measures or regulations

• Test and troubleshoot for optimal performance

J.T distortion is a type of optical distortion that occurs in lenses.

• It is caused by the lens not being perfectly aligned with the optical axis.

• It can result in distorted or blurred images.

• J.T distortion can be corrected through the use of specialized lenses or software.

• It is commonly seen in wide-angle lenses and can be more pronounced at the edges of the image.

• J.T distortion is named after James Thomson, who first described it in 1893.

Flow cytometry is a technique used to analyze and sort cells based on their physical and chemical properties.

• Cells are passed through a laser beam and the scattered light is detected to determine cell size and granularity

• Fluorescently labeled antibodies can be used to identify specific cell types or molecules

• Flow cytometry is commonly used in research and clinical settings for cell analysis and sorting

• It has applications in immunology, hematology, oncology, and microbiology

I have extensive research experience in the field of psychology, focusing on cognitive processes and behavior.

• Conducted multiple experiments to investigate the impact of cognitive biases on decision-making

• Published several papers in reputable journals on topics such as memory consolidation and attentional processes

• Presented research findings at international conferences and symposiums

• Collaborated with other researchers on interdisciplinary projects to explore the intersection...read more