Enlist four harmful effects of improper earthing.
State any four types of faults and their causes in electrical power system
Classify wiring. State the type of wiring installation used for following applications with justification: (i) Hospital (ii) Spinning mill (iii) Milk Dairy (iv) Hotel.
Explain with justification two uses of each of two following as an electrical conductor: (i) Brass (ii) Silver.
Give the causes and impact and reasons for grid system faults.
Describe with neat sketch any one type of earthing system.
Explain the criteria to be applied in deciding the earthing system for an electrical installation.
Give the operation of battery charger using SCR with a neat diagram.
Draw a neat diagram of 1φ half wave controlled converter with RL load. Give its operation.
Why the reactance of a system under fault condition is low and faults currents may raise dangerously high value. ? (With simple example)
State any four causes of faults in the power system.
How does a high impedance busbar differential protection scheme provide stability during external faults?
How does a voltage memory polarizing scheme enhance directional protection during close-in faults?
How does a high impedance restricted earth fault protection scheme provide stability during through faults?
How does a voltage restrained differential protection scheme provide stability during external faults?
How does a percentage differential relay provide stability during through faults?
Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB.
Describe with block diagram; working of signal generator and state at least two applications of signal generator.
State/Describe the construction and working of western type frequency meter with labelled diagram.
What is pyrometry? Explain the working of optical pyrometer with a neat diagram. State its one application. Answer : ### Pyrometry **Pyrometry** is the measurement of temperature, particularly in high-temperature environments, where traditional temperature measurement methods like thermocouples or thermometers might not be suitable. It is ... . Let me know if you'd like more details or clarification on any part!...
Why is Rotameter called a variable area flowmeter? Explain the working of Rotameter with a neat diagram. State one advantage and one disadvantage.
Draw the constructional diagram of LVDT. State its working principle. What is residual voltage? Explain with a neat diagram.
Describe emergency lighting system with neat diagram.
Describe with neat sketch the installation of plate earthing.
State significance of earthing. Draw and explain pipe earthing. State the values of earth resistances for: (i) Substation (ii) Residential wiring (iii) H.T. Line (iv) L.T. Line.
Define earthing. State its types.
Explain the importance of proper earthing system. Recommend and justify the earthing system used for individual bungalow.
What is different between resistance grounding system and resistance earthing system?
Draw the circuit diagram of DC static circuit breaker and give its operation.
Draw logic diagram of 4:1 multiplexer & give its truth table.
Explain with a sketch protection of 3-phase induction motor during single phasing.
How does a UPS interface with a building's electrical system? Answer : A UPS (Uninterruptible Power Supply) interfaces with a building's electrical system in a way that ensures a continuous power supply to critical equipment in case of power interruptions, ... interruptions. It does this through its battery backup, internal conversion process, and transfer switching....
State the various problems caused during the operation of large wind power generators.
State any four IE Rules to be followed in respect of safety while working on electrical installation system.
What are three common faults with capacitors?
State any four causes of faults.
Explain in brief four causes of faults in the power system.
List different types of faults occured on a power system. Draw necessary sketches (any four)
How does an inverter manage system faults?
Give the concept of firing angle and conduction angle with a neat waveform. Answer : Sure! Let's break down the concepts of **firing angle** and **conduction angle** in the context of power electronics, particularly focusing on **thyristors** like **SCRs (Silicon-Controlled Rectifiers)**. ### ... . Does that make sense? If you'd like more details or an example, just let me know!...
State the function of strain gauge. Give its types and explain the working of any one type of it.
State Thevenin’s theorem and give a proof. Apply this theorem to calculate the current through a resistor.
Define electrical power and give its formula.
What are the consequences of improper MCB installation?
Explain with block diagram the construction and working principle of three phases electronic energy meter?
Describe with block diagram working of single phase electronic energy meter.
Explain the working principle of SMPS with neat diagram.
Explain two transistor analogy of SCR with neat diagram.
Explain the operation of opto coupler based triggering circuit with diagram.
Explain the operation of snubber protection circuit with diagram.
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