a) Slightly more than double b) Slightly less than double c) Slightly more than half d) Slightly less than half Ans: (a)
a) The supply terminals only b) The field terminals only c) The supply and the field terminals d) None of these Ans: (b)
a) Armature current decreases b) Flux gets reduced c) Line current gets decreased d) None of these Ans: (b)
a) Remains constant b) Decreases c) Increases d) None of these Ans: (c)
a) Zero b) Medium c) High d) Tending to infinity Ans: (d)
a) Shunt motor with commutating poles b) Series motor with commutating poles c) Series motor without commutating poles d) Compound motor without commutating poles Ans: (a)
a) It can run easily without load. b) It has poor torque. c) It has an almost constant speed. d) Its field winding consists of small number of thick wires. Ans: (d)
a) The armature b) The conductors c) The coupling mounted on the shaft d) The poles Ans: (c)
a) Force on N-m acting on the rotor b) Product of tangential force on the rotor and its radius c) The electrical power in kW d) Power given to the load Ans: (b)
a) Winding fault b) Excessive brush wear c) Excessive noise d) None of these 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 |