a) Suitability of high speeds b) Higher efficiency c) Higher power factor d) That it can be started using factor resistance Ans: (d)
a) 700 W b) 625 W c) 600 W d) 650 W Ans: (b)
a) Low inductance and low resistance b) Low inductance and high resistance c) High inductance and high resistance d) High inductance and low resistance Ans: (c)
a) Rotor resistance b) Star-delta c) Auto-transformer d) Stator resistance Ans: (c)
a) Reduced noise b) Reduced pulsation losses c) Better cooling d) Increased overload capacity Ans: (b)
a) Increase b) Reduce c) Remain the same d) Become zero Ans: (b)
a) Integral slot winding b) Chording c) Skewing d) None of these Ans: (b)
a) Is stationary relative to the field of the fundamental b) Rotates in forward direction at the harmonic speed c) Rotates in backward direction d) Oscillates at harmonic frequency Ans: (c)
a) Dc shunt motors b) Slip ring induction motors c) Synchronous motors d) Squirrel cage induction motors Ans: (d)
a) Refuses to start at load b) Refuses to start at no load c) Runs at low speed and then stops d) Runs at very low speed Ans: (b)
 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 |