a) Reduced windage loss b) Reduced noise c) Reduced bearing loads and noise d) Adaptability to low and medium speed operations Ans: (d)
a) Frequency b) Flux per pole c) Coil span factor d) All of these Ans: (d)
a) 4 b) 3 c) 6 d) 12 Ans: (c)
a) Larger in diameter and smaller in axial length b) Larger in diameter and larger in axial length c) Smaller in diameter and larger in axial length d) Smaller in diameter and smaller in axial length Ans: (a)
a) Shunt motor b) Series motor c) Shunt generator d) Compound motor Ans: (c)
a) Number of poles b) Speed of alternator c) Both (a) and (b) d) Type of winding Ans: (c)
a) Number of poles b) Number of armature conductors c) Number of pair of poles d) None of these Ans: (c)
a) High speed b) Low speed c) Medium speed d) Both low and high speed Ans: (a)
a) Unity power factor b) Leading power factor c) Lagging power factor d) Either lagging or leading power factor Ans: (b)
a) Low speed b) Medium speed c) High speed d) Any speed Ans: (a)
 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 |