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CONSERVATION OF ENERGY MCQs – CHAPTER 7 DAE

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1. The meaning of energy conservation is





2. The sun is the natural source of ---------- energy





3. The mostly heat energy is obtained from





4. The sources of energy losses are





5. The following procedure is used to limit the energy loss





6. The advantages of heat energy over other energies are





7. When electricity is used with high efficiency





8. The regular maintenance and repair of motors causes saving in





9. The per unit cost of electricity is increasing due to





10. The ratio between resistance and impedance is called





11. In AC, the ------- of angle between current and voltage is called power factor





12. The apparent power is measured in





13. When the current remains behind voltage in AC circuit, the power factor is





14. When the current remains ahead of voltage in AC circuit, the power factor is





15. KW is equal to





16. KVAR is equal to





17. The capacitor supplies





18. The formula to find KVAR





19. The formula to find KW





20. No Load over excited motor is called





21. By increasing power factor reduces





22. The power factor in DC Supply is always





23. The improvement in power factor gives advantage to





24. To improve Power factor, -------- is/are used





25. The Phase advancer is used for the improvement of





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