a) No load curve, shunt circuit test values b) No load curve, zero power factor curve c) Zero power factor curve, short circuit test curve d) None of these Ans: (b)
a) Terminal voltage of each machine must be the same b) The machines must have the same phase rotation c) The machines must operate at the same frequency d) The machines must have equal ratings Ans: (d)
a) Large eddy loss b) High centrifugal force and winding loss c) Excessive bearing friction d) Harmful mechanical oscillations Ans: (b)
a) Speed b) Loud c) Excitation d) Prime mover Ans: (b)
a) Always linear b) Always nonlinear c) Sometimes liner and sometimes nonlinear d) None of these Ans: (a)
a) Nominal b) Demagnetizing c) Magnetizing d) Distortional Ans: (d)
a) Demagnetizing b) Magnetizing c) Partly magnetizing and partly cross-magnetising d) None of these Ans: (b)
a) Both deliver it to the bus b) Both absorb it from the bus c) Alternator is delivering it and motor is absorbing it d) Neither of these machines is delivering nor absorbing it. Ans: (d)
a) Slots are skewed b) Silent pole tips are chamfered c) Winding is well distributed d) All of these Ans: (d)
a) Can be insulated satisfactorily for higher voltages b) Can be cooled more efficiently c) All of these d) Both (a) and (b) Ans: (d)
 Multiple Choice Question (MCQ) of Electronics page-17:241. Which of the following statement is true? a) The saturation voltage VCF of silicon transistor is more than germanium transistor. b) The saturation voltage VCE for germanium transistor is more than silicon transistor. c) The saturation voltage VCE for silicon transistor is same as that for germanium. d) The saturation voltage VCE for silicon transistor is lower than germanium transistor. |
Multiple Choice Question (MCQ) of Electronics page-16:226. Which of the following statement is correct? a) Inner electrons are always present in the semiconductor. b) Bound electrons are always present in the semiconductor. c) Free electrons are always present in the semiconductor. d) Inner and bound electrons are always present in the semiconductor. |
Multiple Choice Question (MCQ) of Electronics page-15:211. The materials whose electrical conductivity is usually less than 1 × 106 mho/m are a) Semiconductors b) Conductors c) Insulators d) Alloys |
Multiple Choice Question (MCQ) of Electronics page-14:196. In which of the following device the base resistors are not added in the package but added externally? a) UJT b) CUJT c) PUT d) None of the above |
Multiple Choice Question (MCQ) of Electronics page-13:181. The conduction in JEFT is always by the a) Majority carriers b) Minority carriers c) Holes d) Electrons e) Holes and electrons simultaneously |