Q.97 In parallel operation of transformers , when the impedance of transformers are in direct ratio of their capacities , we getAns 1. Reduced turns ratio2. Reduced efficiency3. Reduced copper loss4. All of the optionsCorrect Ans Provided: 3

Q.91 Which of the following lamp has the highest efficiency. —Ans 1. HPMV2. HPSV3. metal halide4. halogen lampCorrect Ans Provided: 2

Q.92  If an ammeter is connected in place of voltmeter for reading, thenAns 1. No current will flow in the circuit.2. The reading will be too low.3. Very high current will flow through meter & meter may burn ...

Q.94 If the capacitor of a single-phase motor is short-circuitedAns 1. None of the options2. The motor will not start3. The motor will run in the reverse direction4. The motor will run in the same direction at a ...

Q.96 A co-generation system is also known as —–Ans 1. regeneration system2. combined heat and power system3. Brayton cycle4. Reversible systemCorrect Ans Provided: 2

Q.62 An idea in which a set of customers receive electricity at favourable prices at the expense of other customers is called …………..Ans 1. Fuel Adjustment Charge2. Incentive3. Penalty4. Cross-subsidyCorrect Ans Provided: 4

Q.99 The changes in voltage levels in power system are provided by using _____Ans 1. A.C. motor2. Transformer3. Alternator4. D.C. motorCorrect Ans Provided: 2

Q.69 Which duty cycle has on load and off-loads period?Ans 1. Intermittent duty2. Continuous duty with constant load3. Continuous duty with variable load4. Short time dutyCorrect Ans Provided: 1

Q.52 The screen of CRT is coated withAns 1. Copper.2. Insulator.3. Iron.4. Phosphor.Correct Ans Provided: 4

Q.72 The generated _______ emf is converted into ________ emf because of commutatorAns 1. D.C., D.C.2. A.C, Bidirectional.3. unidirectional , bidirectional4. A.C. , unidirectionalCorrect Ans Provided: 4