a) 2.5 ohms b) 6.25 ohms c) 62.5 ohms d) 625 ohms Ans: (c)
a) KW b) Ampere-house c) KVA d) VARH Ans: (b)
a) Low frequency alternating current b) High frequency alternating current c) Direct current d) Direct current and alternating current both Ans: (c)
a) The size of a capacitor increase b) Voltage rating of the capacitor increases c) Microfarad rating of the capacitor increases d) None of the above Ans: (b)
a) True b) False Ans: (b)
a) To reach the final steady temperature if the initial rate of increase of temperature were maintained constant b) To reach 63% of fined steady temperature c) To reach 86.6% of final steady temperature d) To reach 37% of final steady temperature Ans: (a)
a) True b) False Ans: (b)
a) 0.5 × 108/64 gm b) 0.5 × 64/108 gm c) 0.5 × 108/32 gm d) 0.5 × 32/108 gm Ans: (c)
a) To get accurate measurement b) To avoid excessive current in the primary c) To avoid the risk of high voltage because the unopposed primary m.m.f. will set up an abnormally high flux in the core which produces excessive core less with high heating and a high voltage across the secondary of the transformer d) Because the current in the primary is not determined by load in primary Ans: (b)
a) True b) False 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 |