a) 2,000 lines per cm2 b) 2,000 lines per cm2 c) 2,000 kilolines per cm2 d) 400,000 lines per cm2 Ans: (b)
a) M.m.f. corresponds to current b) Gilbert corresponds to volt c) Reluctance corresponds to ampere d) Gauss corresponds to ohm Ans: (b)
a) 0 volt b) 10 volts c) 4 volts d) 5 volts e) 3.33 volts Ans: (e)
a) Zero and ideally infinity zero input impedance respectively b) Ideally infinite and zero input impedances respectively c) High and low input impedances respectively d) None of the above Ans: (a)
a) Imax/2 b) Imax/√2 c) Imax d) Imax/√3 Ans: (a)
a) Electrodynamic ammeter b) Moving coil galvanometer c) Thermocouple type instrument d) Induction type instrument Ans: (c)
a) nE/R + r b) nE/R c) nE/r + n.r d) E/R + r Ans: (c)
a) Dielectric heating b) Induction heating c) Wood heating d) None of the above Ans: (b)
a) Decreases the capacitance b) Increases the capacitance c) Provides the strength to the capacitor plates d) None of the above Ans: (b)
a) Generally uses the iron-vane type of a.c. movement b) Has a linear scale because it uses a.d.c. meter movement c) Has a none-linear scale crowded at the left because it uses the dynamometer type of meter movement d) Needs a thermocouple for low frequencies 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 |