1. The meaning of energy conservation is
(A) The wastage of energy
(B) Less use of energy
(C) The saving of energy
(D) The control of energy
2. The sun is the natural source of ---------- energy
(A) Heat
(B) Both a & b
(C) Light
(D) Nuclear energy
3. The mostly heat energy is obtained from
(A) Sun
(B) Fossil Fuel
(C) Geothermal
(D) Wind
4. The sources of energy losses are
(A) Light energy loss
(B) Heat energy loss
(C) All of these
(D) Electric energy loss & Fuel loss
5. The following procedure is used to limit the energy loss
(A) Light energy conservation
(B) Heat energy conservation
(C) All of these
(D) Electric energy conservation
6. The advantages of heat energy over other energies are
(A) Easy control
(B) High efficiency
(C) Clean environment
(D) All of these
7. When electricity is used with high efficiency
(A) Reduces losses
(B) Increases industrial production
(C) Both a & b
(D) None of these
8. The regular maintenance and repair of motors causes saving in
(A) Energy
(B) Light
(C) Heat
(D) Water
9. The per unit cost of electricity is increasing due to
(A) Line losses
(B) All of these
(C) Expensive contract of purchasing electricity with private sector
(D) Theft of electricity
10. The ratio between resistance and impedance is called
(A) Farm Factor
(B) Peak Factor
(C) Power Factor
(D) Reflection factor
11. In AC, the ------- of angle between current and voltage is called power factor
(A) Sin
(B) Cot
(C) Tan
(D) Cos
12. The apparent power is measured in
(A) Both a & b
(B) KVA
(C) VA
(D) KW
13. When the current remains behind voltage in AC circuit, the power factor is
(A) None of these
(B) Leading
(C) Unity
(D) Lagging
14. When the current remains ahead of voltage in AC circuit, the power factor is
(A) Lagging
(B) Leading
(C) Unity
(D) None of these
15. KW is equal to
(A) KVA Sin
(B) KVAR Sin
(C) KVA Cos
(D) KVAR Cos
16. KVAR is equal to
(A) KVAR Sin
(B) KVA Cos
(C) KVA Sin
(D) –
17. The capacitor supplies
(A) Leading KVA
(B) Both a & c
(C) Lead Current
(D) Leading KW
18. The formula to find KVAR
(A) None of these
(B) KW Cos
(C) KW Sin
(D) KW Tan
19. The formula to find KW
(A) KVA Sin
(B) None of these
(C) KVA Tan
(D) KVA Cos
20. No Load over excited motor is called
(A) Synchronous Condenser
(B) Capacitor
(C) Both a & b
(D) None of these
21. By increasing power factor reduces
(A) Corona Losses
(B) Iron Losses
(C) Both a & b
(D) Power Losses
22. The power factor in DC Supply is always
(A) Zero
(B) Unity
(C) Lagging
(D) Leading
23. The improvement in power factor gives advantage to
(A) Both a & b
(B) Industrial consumers only
(C) Supply company only
(D) Household consumers
24. To improve Power factor, -------- is/are used
(A) Static Capacitor
(B) Synchronous motor
(C) All of these
(D) Phase advancer
25. The Phase advancer is used for the improvement of
(A) Power factor
(B) Demand Factor
(C) Load Factor
(D) User Factor