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Chose the correct answer: 1- A squirrel cage induction motor is not selected when (A) initial cost is the main consideration (B) maintenance cost is to be kept low (C) higher starting torque is the main consideration (D) all above considerations are involved 2- The torque of an induction motor is .............. (A) directly proportional to slip (B) inversely proportional to slip... (C) proportional to the square of the slip (D) none of the above 3- Insertion of resistance in the stator of an induction motor. (A) increases the load torque (B) decreases the starting torque (C) increases the starting torque (D) none of above tool to slip 10 or of the above 4- Increase in the length of air-gap in the induction motor results in the increasing of its (A) air-gap flux (B) magnetizing current (C) speed (D) power factor 5- In cumulatively cascade method for speed controlling, if PA is the number of poles of main motor and PB is the number of poles of auxiliary motor. Then the speed of the set is given by (A) 120f/PA+ PB (B) 120f/ PA - PB (C) 120f/PA (D) 120f/PB 6- The leakage reactance of an alternator is determined by performing......... (A) open-circuit and zero power factor tests (B) zero power factor and slip tests short-circuit tests (D) short-circuit and slip tests 7- The short-circuit characteristic of an alternator is .............. (A) always linear (B) always nonlinear (C) either of (A) or (B) (D) none of above 8- In alternators, the distribution factor is defined as the ratio of emfs of ............. (C) open-circuit and (A) distributed winding to concentrated winding (B) full pitch winding to distributed winding (C) distributed winding to full pitch winding (D) concentrated winding to distributed winding 9-Zero power factor method of an alternator is used to find its ........ (A) field resistance (B) armature resistance (C) efficiency (D) voltage regulation 10-Synchronous condenser is (A) overexcited synchronous motor with no mechanical load (B) over excited synchronous motor with mechanical load (C) under excited synchronous motor with no mechanical load I need to choose the correct points with a visual explanation and description if possible.

Chose the correct answer: 1- A squirrel cage induction motor is not selected when (A) initial cost is the main consideration (B) maintenance cost is to be kept low (C) higher starting torque is the main consideration (D) all above considerations are involved 2- The torque of an induction motor is .............. (A) directly proportional to slip (B) inversely proportional to slip... (C) proportional to the square of the slip (D) none of the above 3- Insertion of resistance in the stator of an induction motor. (A) increases the load torque (B) decreases the starting torque (C) increases the starting torque (D) none of above tool to slip 10 or of the above 4- Increase in the length of air-gap in the induction motor results in the increasing of its (A) air-gap flux (B) magnetizing current (C) speed (D) power factor 5- In cumulatively cascade method for speed controlling, if PA is the number of poles of main motor and PB is the number of poles of auxiliary motor. Then the speed of the set is given by (A) 120f/PA+ PB (B) 120f/ PA - PB (C) 120f/PA (D) 120f/PB 6- The leakage reactance of an alternator is determined by performing......... (A) open-circuit and zero power factor tests (B) zero power factor and slip tests short-circuit tests (D) short-circuit and slip tests 7- The short-circuit characteristic of an alternator is .............. (A) always linear (B) always nonlinear (C) either of (A) or (B) (D) none of above 8- In alternators, the distribution factor is defined as the ratio of emfs of ............. (C) open-circuit and (A) distributed winding to concentrated winding (B) full pitch winding to distributed winding (C) distributed winding to full pitch winding (D) concentrated winding to distributed winding 9-Zero power factor method of an alternator is used to find its ........ (A) field resistance (B) armature resistance (C) efficiency (D) voltage regulation 10-Synchronous condenser is (A) overexcited synchronous motor with no mechanical load (B) over excited synchronous motor with mechanical load (C) under excited synchronous motor with no mechanical load I need to choose the correct points with a visual explanation and description if possible.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Chose the correct answer: 1- A squirrel cage induction motor is not selected when (A) initial cost is the main consideration (B) maintenance cost is to be kept low (C) higher starting torque is the main consideration (D) all above considerations are involved 2- The torque of an induction motor is .............. (A) directly proportional to slip (B) inversely proportional to slip... (C) proportional to the square of the slip (D) none of the above 3- Insertion of resistance in the stator of an induction motor. (A) increases the load torque (B) decreases the starting torque (C) increases the starting torque (D) none of above tool to slip 10 or of the above 4- Increase in the length of air-gap in the induction motor results in the increasing of its (A) air-gap flux (B) magnetizing current (C) speed (D) power factor 5- In cumulatively cascade method for speed controlling, if PA is the number of poles of main motor and PB is the number of poles of auxiliary motor. Then the speed of the set is given by (A) 120f/PA+ PB (B) 120f/ PA - PB (C) 120f/PA (D) 120f/PB 6- The leakage reactance of an alternator is determined by performing......... (A) open-circuit and zero power factor tests (B) zero power factor and slip tests short-circuit tests (D) short-circuit and slip tests 7- The short-circuit characteristic of an alternator is .............. (A) always linear (B) always nonlinear (C) either of (A) or (B) (D) none of above 8- In alternators, the distribution factor is defined as the ratio of emfs of ............. (C) open-circuit and (A) distributed winding to concentrated winding (B) full pitch winding to distributed winding (C) distributed winding to full pitch winding (D) concentrated winding to distributed winding 9-Zero power factor method of an alternator is used to find its ........ (A) field resistance (B) armature resistance (C) efficiency (D) voltage regulation 10-Synchronous condenser is (A) overexcited synchronous motor with no mechanical load (B) over excited synchronous motor with mechanical load (C) under excited synchronous motor with no mechanical load
Transcribed Image Text:Chose the correct answer: 1- A squirrel cage induction motor is not selected when (A) initial cost is the main consideration (B) maintenance cost is to be kept low (C) higher starting torque is the main consideration (D) all above considerations are involved 2- The torque of an induction motor is .............. (A) directly proportional to slip (B) inversely proportional to slip... (C) proportional to the square of the slip (D) none of the above 3- Insertion of resistance in the stator of an induction motor. (A) increases the load torque (B) decreases the starting torque (C) increases the starting torque (D) none of above tool to slip 10 or of the above 4- Increase in the length of air-gap in the induction motor results in the increasing of its (A) air-gap flux (B) magnetizing current (C) speed (D) power factor 5- In cumulatively cascade method for speed controlling, if PA is the number of poles of main motor and PB is the number of poles of auxiliary motor. Then the speed of the set is given by (A) 120f/PA+ PB (B) 120f/ PA - PB (C) 120f/PA (D) 120f/PB 6- The leakage reactance of an alternator is determined by performing......... (A) open-circuit and zero power factor tests (B) zero power factor and slip tests short-circuit tests (D) short-circuit and slip tests 7- The short-circuit characteristic of an alternator is .............. (A) always linear (B) always nonlinear (C) either of (A) or (B) (D) none of above 8- In alternators, the distribution factor is defined as the ratio of emfs of ............. (C) open-circuit and (A) distributed winding to concentrated winding (B) full pitch winding to distributed winding (C) distributed winding to full pitch winding (D) concentrated winding to distributed winding 9-Zero power factor method of an alternator is used to find its ........ (A) field resistance (B) armature resistance (C) efficiency (D) voltage regulation 10-Synchronous condenser is (A) overexcited synchronous motor with no mechanical load (B) over excited synchronous motor with mechanical load (C) under excited synchronous motor with no mechanical load
I need to choose the correct points with a visual explanation and description if possible.
Transcribed Image Text:I need to choose the correct points with a visual explanation and description if possible.
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