a) Div curl B = ∞ b) Div curl A = 0 c) Div curl B = 1 d) Div curl B = B Ans: (b)
a) Electric field strength b) Magnetic field strength c) Electric displacement density d) Permeability Ans: (c)
a) E = D b) E = πD c) E = D/ε d) E = r/ε Ans: (c)
a) λ/2 b) λ/8 c) 4λ d) λ/4 Ans: (d)
a) absorptive nature of waves b) reflection of waves c) longitudinal nature of waves d) transverse nature of waves e) electric field of waves Ans: (d)
a) y = sinx/3 b) x = 2 sin3x/2 c) y = 2sin3x d) y = 2 sin2x e) y = 2 sinx Ans: (c)
a) sinθ1 < sinθ2 b) cosθ1 < cosθ2 c) tanθ1 < tanθ2 d) (a)and (c) only e) (b) and (c) only f) (a) and (b) only Ans: (d)
a) The magnetic field inside the conductor is zero b) The magnetic field inside the semiconductor is zero c) The magnetic field inside superconductor is zero d) The magnetic field inside the superconductor is zero Ans: (c)
a) Resistance determination b) Frequency measurements c) Power factor measurements d) Harmonic distortion analysis e) Both (b) and (d) Ans: (e)
a) Moving coil instruments b) Moving iron instruments c) Potentiometric instruments d) Permanent magnet moving coil instruments e) Induction instruments Ans: (d)
a) Paramagnetic b) Diamagnetic c) Ferromagnetic d) Antiferromagnetic Ans: (b)
a) The dipole movement b) Monopole movement c) (a) and (c) both d) None of the above Ans: (a)
a) True b) False Ans: (b)
a) Copper b) Silver c) Copper and silver d) Iron Ans: (c)
a) Copper b) Iron c) Copper and iron d) Nickel e) None of the above 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 |