"Electrify your ambitions and illuminate your path to success! With your dedication and knowledge, you're wired to conquer any challenge in the competitive arena. Keep sparking brilliance, electrical students!" 1.Which of the following statements related to the efficiency of a DC generator when its variable losses are equal to the constant losses is correct? 1. Double of the maximum efficiency 2. Maximum efficiency 3. Half of the maximum efficiency 4. Full load efficiency Ans-2 2. What happened If the AC over load relay used to DC supply? 1. will draw less current 2. will draw more current in the absence of inductive reactance 3. will not work 4. will draw same current Ans-2 3.How many lead acid cells are to be grouped for 12 V battery and how to connect ? 1. 12 cells in parallel 2. 6 cells in series 3. 12 cells in series 4. 6 cells in parallel Ans-2 4. Which of the following precautions must NOT be taken during wiring installation? 1. Use earth wire of any gauge 2. F...

1. MOV protection in a UPS system is used for which of the following? 1. Protection against overload current 2. Protection against high input voltage 3. Protection against frequency variations 4. Protection against temperature variations   ANS- 2 2.Which of the following best defines the effect of corona on a power line? 1. The diameter of the conductor remains the same, whereas the electrostatic stress is decreased. 2. The virtual diameter of the conductor is decreased and the electrostatic stress is increased. 3. The diameter of the conductor is increased but the electrostatic stress remains the same. 4. The virtual diameter of the conductor is increased and the electrostatic stress is decreased. ANS-4 3.Which of the following statements are correct for planned preventive maintenance? (i)Overtime costs are reduced (ii)Improves the safety and health of workers (iii)Reduced number of repairs (iv)Improper usage of manpower 1. Only ii, iii and iv 2. Only i, ii and iv 3. Only i, ii ...

  1. Which of the following materials will witness a decrease in resistance when its temperature d ecreases? 1. Mica 2. Aluminum 3. Paper 4. Rubber Ans - 2 2. The operating temperature of a gas-filled tungsten filament lamp is about ______. 1. 2700⁰ C 2. 2000⁰ C 3. 1500⁰ C 4. 2200⁰ C Ans - 1 3. The application of stepper motor is______. 1. Hair dryer 2. Mixture & grinder 3. Exhaust fan motor 4. Printers & fax machine Ans - 4 4. Which of the following is NOT an effect of single phasing in a three-phase induction motor ? 1. Motor will continue run from running position 2. Motor current is increasing 2.5 times to average current 3. Motor cannot be increasing the heating 4. Motor cannot be started from stop position Ans - 1 5. When metal body of equipment is earthed, it protects the equipment from? 1. Over current 2. Leakage current 3.  Under current 4. Breakdown voltage Ans - 2 6. As a thumb rule for 415 V, 3-phase squirrel cage induction motors , full load current can...