Q.98 The torque characteristics of a three phase induction motor is similar to that of ________.Ans A. d.c. differentially compounded motorB. d.c. cumulatively compounded motorC. d.c. shunt motorD. d.c. series motorCorrect Ans Provided: C

Q.99 In a purely capacitive circuit the instantaneous power curve is a sinusoidal of ________ the frequency of V and I.Ans A. EqualB.C. HalfD. doubleCorrect Ans Provided: D

Q.97 To improve power factor and feeder voltage control for a which compensation is required:Ans A. Excitation controlB. Shunt capacitorC. Synchronous condensersD. Series capacitorCorrect Ans Provided: B

Q.79 Determine the capacitance of a parallel plat capacitor composed of thin foil sheets, 20 cm square for plates separated through a glass dielectric 0.4 cm thick with relative permittivity 6.Ans A. 36.562x-12 FB. 46.562x-12 FC. 26.562x-12 FD. ...

Q.83 Which converter has the polarity of the output voltage is opposite of input voltage?Ans A. Cuk converterB. Boost converterC. SEPIC converterD. Buck converterCorrect Ans Provided: A

Q.91 The power factor is defined as:Ans A. The ratio between apparent power to true powerB. The ratio between apparent power to reactive powerC. The ratio between true power to apparent powerD. The ratio between true power to ...

Q.84 The function of snubber circuit connected across an SCR is:Ans A. Decrease dv/dtB. Limit dv/dtC. To keep constant valueD. Increase dv/dtCorrect Ans Provided: B

Q.85 In a CRO, an electron gun is having:Ans A. Indirectly heated cathode and control gridB. Vertical platesC. Phosphorescent screenD. Horizontal platesCorrect Ans Provided: A

Q.90 When a single phase supply is connected across a single phase winding, the nature of the magnetic field produced is:Ans A. Constant in magnitude and rotating at synchronous speedB. Constant in magnitude and directionC. Rotating in natureD. ...

Q.87Ans A.B.C.D.Correct Ans Provided: A