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Electrical Engineering

Distinguish between: (i) Absolute and secondary instruments (ii) Analog and digital instruments.

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Distinguish between: (i) Absolute and secondary instruments (ii) Analog and digital instruments.

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State the differences between analog instruments and digital instruments.

State the differences between analog instruments and digital instruments.

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List differences between absolute and secondary instrument.

List differences between absolute and secondary instrument.

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Write one example of each type: (i) Active transducer (ii) Primary transducer (iii) Electrical transducer (iv) Digital transducer.

Write one example of each type: (i) Active transducer (ii) Primary transducer (iii) Electrical transducer (iv) Digital transducer.

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Select insulating materials for following parts: (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

Select insulating materials for following parts: (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

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Compare between: (i) Ultrasonic and Radar type level measurement (any three points) (ii) U-tube and well type manometer (any three points).

Compare between: (i) Ultrasonic and Radar type level measurement (any three points) (ii) U-tube and well type manometer (any three points).

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What are the 3 main differences between analog and digital signals?

What are the 3 main differences between analog and digital signals?

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What is the difference between analog and digital?

What is the difference between analog and digital?

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What is the difference between analog and digital LEDs?

What is the difference between analog and digital LEDs?

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What is the difference between analog and digital dimming in LED drivers?

What is the difference between analog and digital dimming in LED drivers?

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What is the difference between an analog and digital converter?

What is the difference between an analog and digital converter?

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What is the difference between analog and digital signals?

What is the difference between analog and digital signals?

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What are the two points to distinguish between interference and diffraction fringes?

What are the two points to distinguish between interference and diffraction fringes?

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Distinguish between ABCD parameters and Z parameters of a two port network.

Distinguish between ABCD parameters and Z parameters of a two port network.

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Distinguish between bilateral and unilateral elements with examples.

Distinguish between bilateral and unilateral elements with examples.

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Distinguish between mesh and loop of network.

Distinguish between mesh and loop of network.

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Distinguish between Energy conservation and Energy audit based on activities.

Distinguish between Energy conservation and Energy audit based on activities.

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Distinguish between an induction motor and a synchronous motor.

Distinguish between an induction motor and a synchronous motor.

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What is the difference between absolute and incremental encoders?

What is the difference between absolute and incremental encoders?

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What is the relationship between relative permittivity and absolute permittivity?

What is the relationship between relative permittivity and absolute permittivity?

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What is the relation between absolute permittivity and dielectric constant?

What is the relation between absolute permittivity and dielectric constant?

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What is the difference between absolute permittivity and relative permittivity?

What is the difference between absolute permittivity and relative permittivity?

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What are the 3 digital instruments?

What are the 3 digital instruments?

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How does increase in temperature affect the resistance of (i) conductors and (ii) insulators ?

How does increase in temperature affect the resistance of (i) conductors and (ii) insulators ?

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Compare Horizontal axis and vertical axis wind machines on the basis of: (i) Power captured for the same tower height. (ii) Noise problem. (iii) Complexity of design and yaw mechanism (iv) Effect of fatigue arising from numerous resonances in structure.

Compare Horizontal axis and vertical axis wind machines on the basis of: (i) Power captured for the same tower height. (ii) Noise problem. (iii) Complexity of design and yaw mechanism (iv) Effect of fatigue arising from numerous resonances in structure.

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Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB.

Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB.

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Compare copper and aluminium on the basis of: (i) Tensile strength (ii) Conductivity (iii) Specific gravity (iv) Application.

Compare copper and aluminium on the basis of: (i) Tensile strength (ii) Conductivity (iii) Specific gravity (iv) Application.

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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.

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.

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Draw and explain the use of: (i) Combination plier (ii) Tester (iii) Wire Striper (iv) Hammer.

Draw and explain the use of: (i) Combination plier (ii) Tester (iii) Wire Striper (iv) Hammer.

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Name the material used and the sensitivity of the following thermocouple type: (i) J (ii) K (iii) R (iv) S.

Name the material used and the sensitivity of the following thermocouple type: (i) J (ii) K (iii) R (iv) S.

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Explain the following troubles and related remedies in an ultrasonic flow meter: (i) Meter does not show reading (ii) Meter shows less value of flow measured (iii) Meter shows a high value of flow measured.

Explain the following troubles and related remedies in an ultrasonic flow meter: (i) Meter does not show reading (ii) Meter shows less value of flow measured (iii) Meter shows a high value of flow measured.

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Compare RTD and thermistor on the basis of: (i) temperature coefficient (ii) linearity (iii) temperature range (iv) cost.

Compare RTD and thermistor on the basis of: (i) temperature coefficient (ii) linearity (iii) temperature range (iv) cost.

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Draw the following and write one application of each: (i) Well type manometer (ii) Bellows.

Draw the following and write one application of each: (i) Well type manometer (ii) Bellows.

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Compare nominal - I and nominal - II method of transmission line (Any six points).

Compare nominal - I and nominal - II method of transmission line (Any six points).

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Convert the following Boolean equation to standard SOP form and implement using NAND-NAND logic: (i) y = A'B'C' + ABC'D' + A'C'D' (ii) y = PQ + P'QR + PQR.

Convert the following Boolean equation to standard SOP form and implement using NAND-NAND logic: (i) y = A'B'C' + ABC'D' + A'C'D' (ii) y = PQ + P'QR + PQR.

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An industrial consumer charged with the scheduled tariff of Rs.250 /kVA per month for maximum demand and 150 paisa per unit consumed for load factor of 60% and 80%. Find overall cost per unit at i) unity P.F. ii) 0.9 P.F. consider maximum demand of 50 kVA.

An industrial consumer charged with the scheduled tariff of Rs.250 /kVA per month for maximum demand and 150 paisa per unit consumed for load factor of 60% and 80%. Find overall cost per unit at i) unity P.F. ii) 0.9 P.F. consider maximum demand of 50 kVA.

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Compare the salient features of LED and CFL based on (i) Lamp efficiency (ii) Life span.

Compare the salient features of LED and CFL based on (i) Lamp efficiency (ii) Life span.
Answer : Here's a comparison of **LED** and **CFL** based on **lamp efficiency** and **life span**: ### 1. Lamp Efficiency: - **LED (Light Emitting Diode):** - **Higher Efficiency:** LEDs ... longer than **CFLs**. - **CFLs** are moderately energy-efficient and have a shorter lifespan compared to LEDs....

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Define the following terms (i) lux and (ii) lumens.

Define the following terms (i) lux and (ii) lumens.

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State the recommended illumination level for (i) library and (ii) operation theatre.

State the recommended illumination level for (i) library and (ii) operation theatre.

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Compare the salient features of mercury vapour lamp and sodium vapour lamp based on (i) lamp efficiency (ii) lumen output.

Compare the salient features of mercury vapour lamp and sodium vapour lamp based on (i) lamp efficiency (ii) lumen output.

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The power input to a 500V 50Hz 6Pole 3 phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses are 2kW. Calculate: (i) Slip (ii) Rotor copper loss (iii) Shaft power (iv) Efficiency

The power input to a 500V 50Hz 6Pole 3 phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses are 2kW. Calculate: (i) Slip (ii) Rotor copper loss (iii) Shaft power (iv) Efficiency

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State suitable single phase motor for following applications: (i) Table fan (ii) Mixers and Grinders

State suitable single phase motor for following applications: (i) Table fan (ii) Mixers and Grinders
Answer : For the applications you mentioned, suitable single-phase motors would be: 1. **Table Fan:** - **Type of Motor:** Capacitor-Start Induction Motor (CSIM) or Permanent Split Capacitor (PSC) ... PSC or CSIM motor. - **Mixers and grinders:** Universal motor or Capacitor-Start Capacitor-Run motor....

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Give any two applications for i) Universal motor and ii) Hysteresis motor.

Give any two applications for i) Universal motor and ii) Hysteresis motor.

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A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

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Draw neat circuit diagram of (i) Feeder reactor and (ii) Generator reactor

Draw neat circuit diagram of (i) Feeder reactor and (ii) Generator reactor

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Difference between megger test equipment and contact resistance meter test instruments?

Difference between megger test equipment and contact resistance meter test instruments?

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Distinguish between a Loop & Mesh of a circuit.

Distinguish between a Loop & Mesh of a circuit.

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What is sample and hold in digital to analog converter?

What is sample and hold in digital to analog converter?

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What are 3 examples of digital and analog?

What are 3 examples of digital and analog?

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Define the following ratings of a motor: (i) Horsepower rating (ii) Short-time rating

Define the following ratings of a motor: (i) Horsepower rating (ii) Short-time rating

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Define the terms: (i) Load factor (ii) Diversity factor (iii) Demand factor (iv) Plant capacity factor.

Define the terms: (i) Load factor (ii) Diversity factor (iii) Demand factor (iv) Plant capacity factor.

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