a) Constant b) Slightly drooping c) Slightly rising d) Highly drooping Ans: (d)
a) Shunt generator b) Series generator c) Shot shunt compound generator d) Level compound generator Ans: (d)
a) Armature reaction b) Armature resistance c) Weakening of the field due to armature reaction d) All of these Ans: (d)
a) Increases b) Decreases c) Remains unchanged d) May increase or decrease Ans: (b)
a) 5 to 10% b) 10 to 20% c) 20 to 30% d) 30 to 40% Ans: (d)
a) Low permeability b) High permeability c) More mechanical strength d) More mechanical strength and high permeability Ans: (d)
a) Electromechanical energy conversion b) Generation of voltage c) Commutation d) Development of torque Ans: (c)
a) Polar axis b) Brush axis c) Interpolar axis d) None of these Ans: (b)
a) The resistance of the armature is high b) There is no residual magnetism c) The field current is too small d) None of these Where ϕ is the flux and N is the speed Ans: (b)
a) Maximum current is produced b) Maximum emf is produced c) Minimum emf is product d) Minimum current is produced Ans: (c)
 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 |