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Note: I need the expert's solution in handwriting with a signature or an equation with a relationship. Q1: Choose the correct answer 1- A single-phase transformer is rated at 220/22 V, 110 VA at 50 Hz, the turn ratio is: (a) 10 (b) 0.1 (c) 2 (d) 0.5 2- The direction of rotation of the de shunt motor can be reversed by (a) Reversing the polarity for both the armature winding and the field winding (b) Reversing the supply voltage connections (c) Reversing the polarity for either the field winding or the armature winding (d) None of these 3- The speed of a de motor can be controlled by varying (a) Its flux per pole (b) Resistance of armature circuit (c) Applied voltage (d) All of the above 4- The efficiency of a transformer is maximum when (a) Constant losses = Iron losses (b) Variable losses = Copper losses (c) Core losses = Copper losses (d) Constant losses = Core Losses 5-The No-load characteristics of a de shunt generator is also called: (a) The performance characteristics (b) The voltage regulation characteristics (c) Total characteristics (d) Magnetizing characteristics 6- The reason for the fall of the terminal voltage due to a load of a de shunt generator: (a) Armature resistance drop (b) Armature reaction drop (c) Reduction in field current (d) All the above

Note: I need the expert's solution in handwriting with a signature or an equation with a relationship. Q1: Choose the correct answer 1- A single-phase transformer is rated at 220/22 V, 110 VA at 50 Hz, the turn ratio is: (a) 10 (b) 0.1 (c) 2 (d) 0.5 2- The direction of rotation of the de shunt motor can be reversed by (a) Reversing the polarity for both the armature winding and the field winding (b) Reversing the supply voltage connections (c) Reversing the polarity for either the field winding or the armature winding (d) None of these 3- The speed of a de motor can be controlled by varying (a) Its flux per pole (b) Resistance of armature circuit (c) Applied voltage (d) All of the above 4- The efficiency of a transformer is maximum when (a) Constant losses = Iron losses (b) Variable losses = Copper losses (c) Core losses = Copper losses (d) Constant losses = Core Losses 5-The No-load characteristics of a de shunt generator is also called: (a) The performance characteristics (b) The voltage regulation characteristics (c) Total characteristics (d) Magnetizing characteristics 6- The reason for the fall of the terminal voltage due to a load of a de shunt generator: (a) Armature resistance drop (b) Armature reaction drop (c) Reduction in field current (d) All the above

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter32: Three-phase Motors
Section: Chapter Questions
Problem 6RQ: Name three factors that determine the torque produced by an induction motor.
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Note: I need the expert's solution in handwriting with a signature or an equation with a relationship. Electric machines.
Note: I need the expert's solution in handwriting with a signature or an equation with a relationship. Q1: Choose the correct answer 1- A single-phase transformer is rated at 220/22 V, 110 VA at 50 Hz, the turn ratio is: (a) 10 (b) 0.1 (c) 2 (d) 0.5 2- The direction of rotation of the de shunt motor can be reversed by (a) Reversing the polarity for both the armature winding and the field winding (b) Reversing the supply voltage connections (c) Reversing the polarity for either the field winding or the armature winding (d) None of these 3- The speed of a de motor can be controlled by varying (a) Its flux per pole (b) Resistance of armature circuit (c) Applied voltage (d) All of the above 4- The efficiency of a transformer is maximum when (a) Constant losses = Iron losses (b) Variable losses = Copper losses (c) Core losses = Copper losses (d) Constant losses = Core Losses 5-The No-load characteristics of a de shunt generator is also called: (a) The performance characteristics (b) The voltage regulation characteristics (c) Total characteristics (d) Magnetizing characteristics 6- The reason for the fall of the terminal voltage due to a load of a de shunt generator: (a) Armature resistance drop (b) Armature reaction drop (c) Reduction in field current (d) All the above
Transcribed Image Text:Note: I need the expert's solution in handwriting with a signature or an equation with a relationship. Q1: Choose the correct answer 1- A single-phase transformer is rated at 220/22 V, 110 VA at 50 Hz, the turn ratio is: (a) 10 (b) 0.1 (c) 2 (d) 0.5 2- The direction of rotation of the de shunt motor can be reversed by (a) Reversing the polarity for both the armature winding and the field winding (b) Reversing the supply voltage connections (c) Reversing the polarity for either the field winding or the armature winding (d) None of these 3- The speed of a de motor can be controlled by varying (a) Its flux per pole (b) Resistance of armature circuit (c) Applied voltage (d) All of the above 4- The efficiency of a transformer is maximum when (a) Constant losses = Iron losses (b) Variable losses = Copper losses (c) Core losses = Copper losses (d) Constant losses = Core Losses 5-The No-load characteristics of a de shunt generator is also called: (a) The performance characteristics (b) The voltage regulation characteristics (c) Total characteristics (d) Magnetizing characteristics 6- The reason for the fall of the terminal voltage due to a load of a de shunt generator: (a) Armature resistance drop (b) Armature reaction drop (c) Reduction in field current (d) All the above
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