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)