10+ Scientific Officer Interview Questions and Answers for Freshers

Chromatographic techniques separate mixtures into individual components based on their physical and chemical properties.

• Gas chromatography separates volatile compounds based on their boiling points and affinity for the stationary phase.

• Liquid chromatography separates compounds based on their polarity and affinity for the stationary phase.

• Ion exchange chromatography separates charged molecules based on their charge and affinity for the stationary phase.

• Size exclusion chromatog...read more

Removing a cross-sectional slice of the core in a transformer will decrease the voltage.

• Removing a cross-sectional slice of the core reduces the magnetic flux in the transformer

• This reduction in magnetic flux leads to a decrease in the induced voltage in the windings

• As a result, the voltage output of the transformer decreases

• This can impact the efficiency and performance of the transformer

Removing a slice of the core in a transformer can lead to decreased efficiency and increased losses.

• Removing a slice of the core can disrupt the magnetic flux path, leading to increased eddy current losses.

• It can also result in increased hysteresis losses, as the magnetic field is no longer evenly distributed.

• Overall, the performance of the transformer will be negatively impacted, with decreased efficiency and potentially increased heating.

• For example, if a slice of the core ...read more

Rotating magnetic field in an AC motor is a magnetic field that rotates within the motor, causing the rotor to turn and generate mechanical energy.

• Rotating magnetic field is created by the interaction of stator windings with the alternating current flowing through them.

• The rotating magnetic field induces currents in the rotor, which in turn creates a torque that causes the rotor to rotate.

• This rotation of the rotor is what drives the mechanical output of the AC motor.

• The spee...read more

Triangle area can be derived using the formula: 0.5 * base * height

• Use the formula: area = 0.5 * base * height

• Measure the base and height of the triangle

• Multiply the base and height by 0.5

• The result is the area of the triangle

Thesis or dissertation procedure in masters

• A thesis or dissertation is a research project that students undertake as part of their master's degree program

• The procedure involves selecting a topic, conducting research, analyzing data, and presenting findings

• The thesis or dissertation is typically supervised by a faculty member and must meet certain formatting and citation requirements

• The final product is a written document that demonstrates the student's mastery of the subject ...read more

Types of media used in laboratory include agar, broth, and selective media.

• Agar is a solid medium used for culturing microorganisms.

• Broth is a liquid medium used for growing bacteria and other microorganisms.

• Selective media contains specific nutrients or chemicals to promote the growth of certain types of microorganisms.

• Other types of media include enriched media, differential media, and transport media.

My top 5 favorite subjects during engineering were: 1. Computer Science 2. Electronics 3. Mathematics 4. Physics 5. Mechanical Engineering

• Computer Science - enjoyed coding and software development

• Electronics - fascinated by circuit design and electronic devices

• Mathematics - loved solving complex problems and equations

• Physics - intrigued by the laws of nature and their applications

• Mechanical Engineering - enjoyed learning about machines and mechanics

Nyquist plot is a graphical representation of a system's frequency response in the complex plane.

• Nyquist plot shows how a system responds to sinusoidal inputs at different frequencies.

• It is used to analyze stability and performance of control systems.

• The plot typically consists of a plot of the real part of the transfer function against the imaginary part.

• Nyquist plots are commonly used in control engineering and signal processing.

• Example: Nyquist plot of a stable system will...read more