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Dc basic
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The insulation resistance of a cable of length 10 km is 1 Mega Ohm's. For a length of 100 km of same cable, the insulation resistance will be 0.1 Mega Ohm [other wrong options] [Discuss in forum] |
| Q2 ⇒ Three resistances each of R Ω are corrected to form a triangle. The
resistance between any two terminals will be 2/3 R Ω [other wrong options] [Discuss in forum] |
| Q3 ⇒ Why is delay distortion in coaxial cables caused? Because of both the factors given at (a) and (e) above.. [other wrong options] [Discuss in forum] |
| Q4 ⇒ EMF of a thermocouple depends upon the both (a) and (b). [other wrong options] [Discuss in forum] |
| Q5 ⇒ How may 200 W/220 V incandescent lamps connected in series would consume the same total power as a single 100 W/220 V
incandescent lamp? 2 [other wrong options] [Discuss in forum] |
| Q6 ⇒ The electrons revolve around the nucleus with high velocity. The
force which acts against the centrifugal force and keeps the electrons
in their orbits is electrostatic force of attraction. [other wrong options] [Discuss in forum] |
| Q7 ⇒ Capacity of a dry cell is more when it supplies current intermittently. [other wrong options] [Discuss in forum] |
| Q8 ⇒ Standard cell will have precise and accurate constant voltage when current drawn from it is few microamperes only. [other wrong options] [Discuss in forum] |
| Q9 ⇒ In a lead acid battery, the level of the electrolyte should be above the level of plates. [other wrong options] [Discuss in forum] |
| Q10 ⇒ Vent plug is provided in each lead acid cell to all of the above. [other wrong options] [Discuss in forum] |
| Q11 ⇒ In comparison to constant current charging method, the constant
voltage charging method of charging a lead acid battery has the
advantage(s) of both (b) and (c). [other wrong options] [Discuss in forum] |
| Q12 ⇒ Nickel-cadmium accumulators in comparison to nickel-iron
accumulators have the advantages of low internal resistance and longer life. [other wrong options] [Discuss in forum] |
| Q13 ⇒ The electric potential due to an electric dipole of length l at a point
distance r away from it will be doubled if the length l of the dipole is doubled. [other wrong options] [Discuss in forum] |
| Q14 ⇒ During dielectric breakdown of a capacitor permanent conduction path is established between capacitor plates. [other wrong options] [Discuss in forum] |
| Q15 ⇒ The dissipation factor of good dielectric is of the order of 0.0002 [other wrong options] [Discuss in forum] |
| Q16 ⇒ An ideal voltage source will charge an ideal capacitor instantaneously. [other wrong options] [Discuss in forum] |
| Q17 ⇒ The surface integral of the electrical field intensity is the net flux emanating from the surface. [other wrong options] [Discuss in forum] |
| Q18 ⇒ Soft magnetic materials have high permeability and low coercive force. [other wrong options] [Discuss in forum] |
| Q19 ⇒ ∇B is based on Gauss's law. [other wrong options] [Discuss in forum] |
| Q20 ⇒ The magnetic field intensity (in A/m) at the centre of a circular coil
of diameter 1 m and carrying a current of 2 A is 2 [other wrong options] [Discuss in forum] |
| Or |