State at least one function and the material used for the following parts of a DC motor.

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

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Give one application each for AC and DC servo motor.

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State any four properties of conductor material used for overhead conductor.

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State the material used for making (1) Magnetic Core (2) Fuse element.

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Classify wiring. State the type of wiring installation used for following applications with justification: (i) Hospital (ii) Spinning mill (iii) Milk Dairy (iv) Hotel.

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State the function of strain gauge. Give its types and explain the working of any one type of it.

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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.

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State failure phenomena observed in insulating material. State four reasons for failure of gaseous and solid dielectric materials.

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State any four parts of the d.c motor.

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

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State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them.

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A motor has to exert power starting from zero and rising uniformly to 150 HP in 8 mins after which it works at constant power of 100 HP for 5 mins. The motor remains on no load for next 5 mins. The cycle again starts and repeats indefinitely. Determine suitable size of motor.

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State any two applications of gaseous insulating material used in switchgears.

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What are the parts of a DC motor?

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Draw the symbol and characteristic of LDR. Give the material used for it.

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Explain the necessity of a starter for a DC motor. State various types of DC motor starters.

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Give one application each of the following transducer: (i) LVDT (ii) RVDT (iii) Capacitive (iv) Piezoelectric.

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Describe the following assembler directives with one example of each: (i) ORG (ii) DB (iii) EQU (iv) END (v) CODE (vi) DATA.

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What does hysteresis loss in a DC machine least depend on?

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DC series motor should never be started at no load. Justify.

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What material is used to make brushes in a DC Machine?

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Draw wiring diagram for connection of one lamp controlled from two places. State the application of this connection.

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Why is Rotameter called a variable area flowmeter? Explain the working of Rotameter with a neat diagram. State one advantage and one disadvantage.

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Draw the symbols and state their function of components used in substation (any six).

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State the various lighting calculations methods and describe any one of them.

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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

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What is the formula for least count of ammeter?

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What material is used for transmission lines?

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Why back emf used for a dc motor? highlight its significance.

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

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Which DC motor is used for?

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State the function of centrifugal switch in single phase induction motor.

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State two insulators of following types along with their areas of application: (i) Class A (ii) Class E (iii) Class H.

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Classify hydropower plants on the basis of water head and state the turbine used for them.

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Explain the function of different parts of a typical nuclear power plant with a neat sketch.

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State any two applications of (i) Ferromagnetic (ii) Paramagnetic material.

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State two applications of: (i) PVC paper (ii) Porcelain with type of class based on withstand temperature is insulating material.

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What are the two main parts of a synchronous motor?

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What is pyrometry? Explain the working of optical pyrometer with a neat diagram. State its one application.

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!...

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