Consider the following statements regarding pumped storage plants:
1. A pumped storage plant is a base load plant.
2. The starting time of a pumped storage plant is very short.
3. Reversible turbines and pumps are highly suitable for pumped storage plants.
Which of these statements are correct?
Answer & step-by-step solution
Pumped-storage hydro stores energy by pumping water to an upper reservoir during low-demand periods and generating during peaks. Its rapid start and reversible pump-turbine equipment make it valuable for peak support, balancing and reserves rather than as a conventional base-load plant. Key relation: Stored potential energy≈ρgH·volume.
Exam focus: Pumped storage shifts energy in time; it does not create net energy. Common trap: Do not classify it as a normal base-load plant.
Statement-wise Verification
- Statement 1 - Incorrect.
A pumped storage plant is a base load plant.
Pumped storage is typically used for peak support, balancing and storage rather than continuous base load - Statement 2 - Correct.
The starting time of a pumped storage plant is very short.
Pumped storage shifts energy in time; it does not create net energy. - Statement 3 - Correct.
Reversible turbines and pumps are highly suitable for pumped storage plants.
Pumped storage shifts energy in time; it does not create net energy.
Core Concept
Pumped-storage hydro stores energy by pumping water to an upper reservoir during low-demand periods and generating during peaks. Its rapid start and reversible pump-turbine equipment make it valuable for peak support, balancing and reserves rather than as a conventional base-load plant.
Formula / Key Relationship
Stored potential energy≈ρgH·volume.
Why the Other Options Are Wrong
Option A is incorrect because it includes incorrect statement(s) 1 and omits correct statement(s) 3. Option C is incorrect because it includes incorrect statement(s) 1 and omits correct statement(s) 2. Option D is incorrect because it includes incorrect statement(s) 1.
Exam Shortcut / Approach
Pumped storage shifts energy in time; it does not create net energy.
Common Mistake
Do not classify it as a normal base-load plant.
Quick Revision
Pumped Storage Operation is linked with Pumped Storage, Power Plants and Power Systems. Pumped storage shifts energy in time; it does not create net energy.
पंप्ड स्टोरेज संयंत्रों के संबंध में निम्नलिखित कथनों पर विचार कीजिए:
1. पंप्ड स्टोरेज संयंत्र एक बेस लोड संयंत्र है।
2. पंप्ड स्टोरेज संयंत्र का प्रारंभ समय बहुत कम होता है।
3. प्रतिवर्ती (reversible) टरबाइन और पंप पंप्ड स्टोरेज संयंत्रों के लिए अत्यधिक उपयुक्त हैं।
इनमें से कौन-से कथन सही हैं?
उत्तर और चरणबद्ध हल
B — केवल 2 और 3। पंप्ड स्टोरेज कम माँग के समय पानी ऊपरी जलाशय में पंप करता है और पीक पर बिजली बनाता है। तेज़ प्रारंभ और प्रतिवर्ती पंप-टरबाइन इसे पीक लोड/संतुलन के लिए उपयोगी बनाते हैं, बेस-लोड के लिए नहीं।
विस्तृत हल (मूल भाषा में)
Statement-wise Verification
- Statement 1 - Incorrect.
A pumped storage plant is a base load plant.
Pumped storage is typically used for peak support, balancing and storage rather than continuous base load - Statement 2 - Correct.
The starting time of a pumped storage plant is very short.
Pumped storage shifts energy in time; it does not create net energy. - Statement 3 - Correct.
Reversible turbines and pumps are highly suitable for pumped storage plants.
Pumped storage shifts energy in time; it does not create net energy.
Core Concept
Pumped-storage hydro stores energy by pumping water to an upper reservoir during low-demand periods and generating during peaks. Its rapid start and reversible pump-turbine equipment make it valuable for peak support, balancing and reserves rather than as a conventional base-load plant.
Formula / Key Relationship
Stored potential energy≈ρgH·volume.
Why the Other Options Are Wrong
Option A is incorrect because it includes incorrect statement(s) 1 and omits correct statement(s) 3. Option C is incorrect because it includes incorrect statement(s) 1 and omits correct statement(s) 2. Option D is incorrect because it includes incorrect statement(s) 1.
Exam Shortcut / Approach
Pumped storage shifts energy in time; it does not create net energy.
Common Mistake
Do not classify it as a normal base-load plant.
Quick Revision
Pumped Storage Operation is linked with Pumped Storage, Power Plants and Power Systems. Pumped storage shifts energy in time; it does not create net energy.
પમ્પ્ડ સ્ટોરેજ મથકો અંગે નીચેનાં વિધાનો ધ્યાનમાં લો:
1. પમ્પ્ડ સ્ટોરેજ મથક બેઝ લોડ મથક છે.
2. પમ્પ્ડ સ્ટોરેજ મથકનો શરૂઆતનો સમય ખૂબ ઓછો હોય છે.
3. ઉલટાવી શકાય તેવા (reversible) ટર્બાઇન અને પંપ પમ્પ્ડ સ્ટોરેજ મથકો માટે અત્યંત યોગ્ય છે.
આમાંથી કયાં વિધાનો સાચાં છે?
જવાબ અને પગલાવાર ઉકેલ
B — ફક્ત 2 અને 3. પમ્પ્ડ સ્ટોરેજ ઓછી માંગના સમયે પાણી ઉપલા જળાશયમાં પંપ કરે છે અને પીક સમયે વીજળી બનાવે છે. ઝડપી શરૂઆત અને ઉલટાવી શકાય તેવા પંપ-ટર્બાઇન તેને પીક લોડ/સંતુલન માટે ઉપયોગી બનાવે છે, બેઝ-લોડ માટે નહીં.
વિગતવાર ઉકેલ (મૂળ ભાષામાં)
Statement-wise Verification
- Statement 1 - Incorrect.
A pumped storage plant is a base load plant.
Pumped storage is typically used for peak support, balancing and storage rather than continuous base load - Statement 2 - Correct.
The starting time of a pumped storage plant is very short.
Pumped storage shifts energy in time; it does not create net energy. - Statement 3 - Correct.
Reversible turbines and pumps are highly suitable for pumped storage plants.
Pumped storage shifts energy in time; it does not create net energy.
Core Concept
Pumped-storage hydro stores energy by pumping water to an upper reservoir during low-demand periods and generating during peaks. Its rapid start and reversible pump-turbine equipment make it valuable for peak support, balancing and reserves rather than as a conventional base-load plant.
Formula / Key Relationship
Stored potential energy≈ρgH·volume.
Why the Other Options Are Wrong
Option A is incorrect because it includes incorrect statement(s) 1 and omits correct statement(s) 3. Option C is incorrect because it includes incorrect statement(s) 1 and omits correct statement(s) 2. Option D is incorrect because it includes incorrect statement(s) 1.
Exam Shortcut / Approach
Pumped storage shifts energy in time; it does not create net energy.
Common Mistake
Do not classify it as a normal base-load plant.
Quick Revision
Pumped Storage Operation is linked with Pumped Storage, Power Plants and Power Systems. Pumped storage shifts energy in time; it does not create net energy.
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