Draw and explain torque speed characteristics of universal motor and suggest the applications of the same.

Calculate speed of motor when delivery maximum voltage. Also calculate the resistance to be added to achieve 3/4th of maximum torque at time of starting.
Answer : To calculate the speed of the motor when delivering the maximum voltage and the resistance to be added to achieve 3/4th of maximum torque at the time of starting, we need to break down the ... resistance. If you have specific values for these parameters, I can help you calculate the exact numbers....

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Draw and explain V and inverted V curves of synchronous motor.

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Draw and explain 'V' and 'inverted V curves' for synchronous motor.

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List the speed control methods of three phase induction motor and explain any one method.

List the speed control methods of three phase induction motor and explain any one method.
Answer : There are several methods to control the speed of a three-phase induction motor. Here are the most commonly used methods: ### 1. **V/f Control (Voltage-to-Frequency Control)** ... the motor's magnetic flux constant, and thus preventing it from overheating and maintaining efficient operation....

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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.

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Draw symbols and V-I characteristics of the following devices: LASCR DIAC PUT SCS.

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Explain the characteristics of a DC shunt motor.

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Explain with the help of a neat diagram the following methods of speed control for a DC series motor: (i) Field diverter method. (ii) Tapped field method.

Explain with the help of a neat diagram the following methods of speed control for a DC series motor: (i) Field diverter method. (ii) Tapped field method.
Answer : ### Speed Control of DC Series Motor DC series motors are commonly used in applications where the motor needs to run at varying speeds, such as in cranes, electric trains, and ... given armature current, but they come with different complexities and impacts on the overall motor performance....

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What is a torque-speed curve?

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Draw I-V characteristics of power transistor. Show different regions.

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Draw the V-I characteristics of power transistor.

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Develop an ALP for interfacing LEDs with Port 1 of 8051. Draw an interfacing diagram for the same.

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State errors occurring in wattmeter and suggest method for overcoming such types of errors (Any six).

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List any four commercial losses and suggest a remedy to overcome it.

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Explain the concept of motor drives in industrial applications.

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Draw the circuit diagram of battery charger using SCR and explain its working.

Draw the circuit diagram of battery charger using SCR and explain its working.
Answer : ### Battery Charger Circuit Using SCR Here's a basic explanation of how a battery charger circuit works using an SCR (Silicon-Controlled Rectifier): #### **Circuit Diagram:** The circuit ... -DC conversion and regulate the charging process, providing a safe and reliable way to charge batteries....

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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.

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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.
Answer : Here's an explanation and description of the use of each tool: ### (i) **Combination Pliers** - **Image Description:** Combination pliers are typically a tool with a pair of jaws that can ... electrical devices or panel boxes. Let me know if you'd like a visual representation of these tools!...

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Draw and explain the construction and working of Dead Weight Tester.

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Draw a neat sketch of Rotameter and explain its working principle.

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Draw and explain the block diagram of an instrumentation system.

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Draw constructional details of C-types Bourdon tube and explain its working.

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Draw and explain the construction of underground cables.

Draw and explain the construction of underground cables.
Answer : ### Construction of Underground Cables Underground cables are used to transmit electrical power or signals below the ground, offering protection from weather, accidental damage, and other environmental factors. These cables are typically more ... \ | Outer Sheath (PVC/PE) | ...

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Draw a neat labeled diagram of a neon sign tube and explain its working.

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Explain Squirrel Cage Induction Generator (SCIG) and also draw a diagram.

Explain Squirrel Cage Induction Generator (SCIG) and also draw a diagram.
Answer : ### Squirrel Cage Induction Generator (SCIG) A **Squirrel Cage Induction Generator (SCIG)** is a type of **asynchronous machine** that operates as a generator instead of a motor. It is a ... and simplicity. The absence of brushes or slip rings makes it a low-maintenance and cost-effective option....

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Draw and explain a fixed dome type biogas plant.

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Draw and explain filled system thermometer.

Draw and explain filled system thermometer.
Answer : A **filled system thermometer** is a type of thermometer that uses a liquid or gas that expands and contracts based on temperature changes to measure temperature. These thermometers work on ... response to temperature changes, with the height of the fluid providing an accurate temperature reading....

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Draw and explain Doppler type flow measurement.

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Draw and explain Bi-polar HVDC transmission line.

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Explain the conditions for setting up negative phase sequence currents in an alternator. Draw the protective scheme to detect them and operate the CB.

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What is the working principle of universal motor?

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What is a universal motor?

What is a universal motor?
Answer : A **universal motor** is a type of electric motor that can run on either **AC (Alternating Current)** or **DC (Direct Current)**. It's called "universal" because it can be used ... high-speed motor that can work on both types of electrical power but requires maintenance to keep running smoothly....

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Define slip and synchronous speed of 3 phase induction motor.

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How do you control the direction and speed of a stepper motor?

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What is torque of a motor?

What is torque of a motor?
Answer : Torque of a motor is a measure of the rotational force that the motor generates to rotate an object, like a wheel or a fan. It's what makes the motor move or do useful work. In ... torque is related to the amount of current flowing through the motor; more current typically results in more torque....

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Derive the condition for maximum torque under running condition of a 3 phase induction motor.

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Can I increase the torque of stepper motor?

Can I increase the torque of stepper motor?
Answer : Yes, you can increase the torque of a stepper motor in a few ways. Here are the most common methods: ### 1. **Increase Current to the Motor** - Stepper motors generate torque ... -offs, so choose one depending on your specific requirements (like speed, precision, and power supply constraints)....

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