A physical system of electromechanical energy conversion consists of a stationary part creating a magnetic field with electric energy input, and a moving part giving mechanical energy output. If the movable part is kept fixed, the entire electrical energy input will be _______
Answer & step-by-step solution
In conventional electromagnetic energy-conversion devices, electrical input establishes magnetic flux in the coupling field, so energy is stored primarily in the magnetic field before being converted into mechanical work and/or returned electrically.
Concept & Reasoning
Motors, generators, relays and actuators use a magnetic coupling field between stationary and moving parts. The energy balance separates electrical input, mechanical output and change in stored field energy. For magnetically coupled devices, the relevant storage term is magnetic-field energy (or co-energy for convenient force/torque derivation).
How to Solve It in the Exam
Electromechanical machines → magnetic coupling field.
Important Exam Point
Co-energy is a mathematical convenience for force/torque; it is not a different physical storage field.
Quick Trick
Electromechanical machines → magnetic coupling field.
Common Mistake
Selecting electric-field energy as the dominant coupling mechanism of ordinary rotating electrical machines.
विद्युत-यांत्रिक ऊर्जा रूपांतरण के एक भौतिक सिस्टम में स्थिर भाग विद्युत ऊर्जा इनपुट से चुंबकीय क्षेत्र बनाता है और गतिशील भाग यांत्रिक ऊर्जा आउटपुट देता है। यदि गतिशील भाग को स्थिर रखा जाए, तो संपूर्ण विद्युत ऊर्जा इनपुट _______
उत्तर और चरणबद्ध हल
पारंपरिक विद्युतचुंबकीय ऊर्जा-रूपांतरण उपकरणों में विद्युत इनपुट युग्मन क्षेत्र में चुंबकीय फ्लक्स स्थापित करता है, इसलिए यांत्रिक कार्य में बदलने से पहले ऊर्जा मुख्यतः चुंबकीय क्षेत्र में संग्रहीत होती है।
विस्तृत हल (मूल भाषा में)
Concept & Reasoning
Motors, generators, relays and actuators use a magnetic coupling field between stationary and moving parts. The energy balance separates electrical input, mechanical output and change in stored field energy. For magnetically coupled devices, the relevant storage term is magnetic-field energy (or co-energy for convenient force/torque derivation).
How to Solve It in the Exam
Electromechanical machines → magnetic coupling field.
Important Exam Point
Co-energy is a mathematical convenience for force/torque; it is not a different physical storage field.
Quick Trick
Electromechanical machines → magnetic coupling field.
Common Mistake
Selecting electric-field energy as the dominant coupling mechanism of ordinary rotating electrical machines.
વિદ્યુત-યાંત્રિક ઊર્જા રૂપાંતરની એક ભૌતિક સિસ્ટમમાં સ્થિર ભાગ વિદ્યુત ઊર્જા ઇનપુટથી ચુંબકીય ક્ષેત્ર બનાવે છે અને ગતિશીલ ભાગ યાંત્રિક ઊર્જા આઉટપુટ આપે છે. જો ગતિશીલ ભાગને સ્થિર રાખવામાં આવે, તો સંપૂર્ણ વિદ્યુત ઊર્જા ઇનપુટ _______
જવાબ અને પગલાવાર ઉકેલ
પરંપરાગત વિદ્યુતચુંબકીય ઊર્જા-રૂપાંતર ઉપકરણોમાં વિદ્યુત ઇનપુટ યુગ્મન ક્ષેત્રમાં ચુંબકીય ફ્લક્સ સ્થાપે છે, તેથી યાંત્રિક કાર્યમાં ફેરવાતા પહેલાં ઊર્જા મુખ્યત્વે ચુંબકીય ક્ષેત્રમાં સંગ્રહાય છે.
વિગતવાર ઉકેલ (મૂળ ભાષામાં)
Concept & Reasoning
Motors, generators, relays and actuators use a magnetic coupling field between stationary and moving parts. The energy balance separates electrical input, mechanical output and change in stored field energy. For magnetically coupled devices, the relevant storage term is magnetic-field energy (or co-energy for convenient force/torque derivation).
How to Solve It in the Exam
Electromechanical machines → magnetic coupling field.
Important Exam Point
Co-energy is a mathematical convenience for force/torque; it is not a different physical storage field.
Quick Trick
Electromechanical machines → magnetic coupling field.
Common Mistake
Selecting electric-field energy as the dominant coupling mechanism of ordinary rotating electrical machines.
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