10+ PHD Scholar Interview Questions and Answers

The voltage across a capacitor depends on the charge stored on it and the capacitance. Ripple and amplitude of the curve depend on the input waveform.

• Voltage across a capacitor is given by V = Q/C, where Q is the charge stored on the capacitor and C is the capacitance.

• The ripple in the voltage across the capacitor depends on the input waveform and the load on the capacitor.

• The amplitude of the curve will depend on the peak voltage of the input waveform and the capacitance of ...read more

The current flowing through an RL circuit is initially zero and increases exponentially over time.

• At t=0, the current in an RL circuit is zero as the inductor initially resists changes in current

• As time progresses, the current in the RL circuit increases exponentially towards its maximum value

• The time constant of the RL circuit determines how quickly the current reaches its maximum value

Adding a capacitor in series with RLC circuit will affect the current vs time graph.

• The addition of a capacitor will introduce a phase shift in the current waveform.

• The presence of the capacitor will cause the current to oscillate at a different frequency compared to the original RLC circuit.

• The amplitude of the current waveform may also change with the addition of the capacitor.

The voltage across the diode in a buck converter depends on the input voltage, duty cycle, and load resistance.

• The voltage across the diode is typically equal to the input voltage minus the voltage drop across the diode.

• The duty cycle of the buck converter affects the average voltage across the diode.

• The load resistance also impacts the voltage across the diode.

• For example, if the input voltage is 12V, the diode has a voltage drop of 0.7V, and the duty cycle is 0.5, the volta...read more

To convert 100 V DC to 40 V DC, a buck converter can be used.

• Buck converter steps down voltage by controlling the duty cycle of a switch

• It consists of an inductor, a diode, a capacitor, and a switch (usually a MOSFET)

• Example: Use a buck converter with a duty cycle of 0.4 to convert 100 V DC to 40 V DC

Research is the systematic investigation into a specific topic to discover new knowledge or validate existing theories.

• Research involves gathering and analyzing information to answer specific questions or solve problems.

• It requires critical thinking, creativity, and attention to detail.

• Research can lead to advancements in various fields such as science, technology, medicine, and social sciences.

• By conducting research, one can contribute to the existing body of knowledge and m...read more

Doctrinal research is based on existing laws, theories, and principles, while empirical research involves collecting and analyzing data to test hypotheses.

• Doctrinal research relies on existing legal or theoretical frameworks, while empirical research involves collecting and analyzing data.

• Doctrinal research is often used in fields like law, philosophy, and theology, while empirical research is common in sciences like psychology, sociology, and medicine.

• Doctrinal research aims...read more

Longitudinal research involves studying the same group of individuals over a period of time, while cross-sectional research involves studying different groups at one point in time.

• Longitudinal research tracks changes in the same group of individuals over time.

• Cross-sectional research compares different groups at a single point in time.

• Longitudinal research allows for the examination of cause and effect relationships over time.

• Cross-sectional research provides a snapshot of a ...read more

Quantum mechanics is a branch of physics that deals with the behavior of particles at the atomic and subatomic levels.

• Quantum superposition - particles can exist in multiple states simultaneously until measured

• Quantum entanglement - particles become interconnected and can affect each other's properties even when separated by large distances

• Wave-particle duality - particles exhibit both wave-like and particle-like behavior

• Quantum tunneling - particles can pass through energy b...read more

My main area of research is in the field of artificial intelligence and machine learning.

• Developing algorithms for natural language processing

• Creating predictive models for healthcare data

• Exploring deep learning techniques for image recognition

• Investigating the ethical implications of AI

• Collaborating with industry partners to apply research in real-world settings

Yes, I have published in good reputed journals.

• I have published multiple research papers in top-tier journals in my field.

• My publications have been cited by other researchers in their work.

• I have also presented my research at various conferences and symposiums.

• Some of the journals I have published in include Nature, Science, and The Lancet.

There are approximately 200 different cell types in the human body.

• Cell types vary in structure, function, and location in the body.

• Examples of cell types include red blood cells, neurons, and muscle cells.

• Different cell types work together to form tissues and organs.

• The study of cell types is important in understanding human biology and disease.