Q.79Ans 1.2.3.4.Correct Ans Provided: 2

Q.78 If u(t) = 1, for t > 0 = 0, for t < 0 The value of the function 5 u(t) – 4 ...

Q.76Ans 1. Less than 50 Hz2. Less than 300Hz3. Greater than 300Hz4. Greater than 50HzCorrect Ans Provided: 3

Q.77For the single phase transformer shown above, the magnetizing current drawn is 1 A, and the secondary current is 1A. Then the primary current is? (neglect core losses and leakage reactance)Ans 1.

Q.75 The law in mechanical system which is analogous to Kirchhoff’s law in electrical system is?Ans 1. De Alemberts principle2. Third law of motion3. First Law of motion4. Second law of motionCorrect Ans Provided: 1

Q.80 Hollow conductors and bundled conductors help in dealing with ________.Ans 1. Skin effect2. Stroboscopic effect3. Ferranti effect4. CoronaCorrect Ans Provided: 4

Q.74 The air gap flux of an alternator has a 3rd harmonic component along with fundamental component. If the coils are short pitched by an angle α for fundamental wave, then the pitch factor corresponding to the 3rd ...

Q.41 “Zero inductance and infinite resistance” are the features of _________.Ans 1. Coil connected to a DC voltage source2. Short circuited coil3. Coil connected to a AC voltage source4. Open coilCorrect Ans Provided: 4

Q.60 Which of the following are the variable losses in induction motor?Ans 1. Core loss, Stray load Loss2. Core loss, Copper loss3. Core loss, Mechanical Loss4. Coper loss, Stray load LossCorrect Ans Provided: 4

Q.44 The incipient faults in a transformer are identified by ________.Ans 1. Gas-actuated relay2. Earth fault relay3. Overvoltage relay4. Distance relayCorrect Ans Provided: 1