Company: Reliance_MCQ
Difficulty: medium
Which type of motor does not require a separate power source for the rotor? Synchronous motor Induction motor Brushless DC motor Universal motor A 25 KVA transformer is constructed to a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms and of secondary winding is 0.5+j0.8 ohms. What will be the impedance of transformer when referred to primary? 53j + 85 ohms 53 + 85j ohms 3.5 + 5.8j ohms 5.3 + 8.5j ohms In a 400KV network, 360 KV is recorded at a 400 KV bus. The reactive power absorbed by shunt rated for 50 MVAr, 400 KV connected at the bus is 40.5MVAr 45MVAr 55.5MVAr 61.73MVAr If gain of the system is zero, then the roots coincide with poles move away from zeroes move away from poles None of the options Lead Acid battery cells are topped up when electrolyte level falls below minimum using H2SO4 DM water Both A&B None of the above Two 500 ohms, 1 watt resistors are connected in parallel. Their combined resistance and wattage rating will be 5000 ohms, 1 watt 2