The ratings of circuit breakers are decided on the basis of: Symmetrical fault currents Unsymmetrical fault current Normal circuit currents None of the above Correct answer: 1. Symmetrical fault currents
The current in radial distributor will be maximum at: End point of distributor Mid point of distributor Source end of the distributor None of above Correct answer: 3. Source end of distributor
If the insulation resistance of cable of length 10 km is 1 MΩ its insulation resistance for 70 km will be: 0.255 MΩ 0.556 MΩ 0.714 MΩ 0.955 MΩ Correct answer: 3. 0.714 MΩ For Case 1: R1 ∝ 1/L1 ; R2 ∝ 1/L2 R2/R1 = L1/L2 R2 = R1 * L1/L2 = 5 * … Read more
In a short transmission line, the receiving end power factor is changing from lagging to leading. The voltage regulation of line will: Increase Decrease Remain the same None of above Correct answer: 2. Decrease
Increasing the frequency of transmission line will cause: Line resistance to increase Shunt capacitance to increase Line resistance to decrease Line reactance to decrease Correct answer: 1. Line resistance to increase
Electrical Engineering MCQ on Electric Power Generation Power Generation MCQ Part 2 Most advantageous Power Generation from Sea Water Which method of generating electric power from seawater is more advantageous: Ocean currents Wave power Tidal power Correct answer: 3. Tidal power Of three mentioned methods of Power Generation water bodies, the method of generating power … Read more
Under voltage relays are mostly employed for protection of: Motors Transformers Bus-bars Feeders Correct answer: 1. Motors Under voltage relays are mostly employed for protection of motors.
Sheaths are used in cables to: Provide mechanical strength Provide proper insulation Provide ingress of moisture None of these Correct answer: 3. Provide ingress of moisture
The capacitance of a transmission line is best defined as: Series element Shunt element Series-shunt element None of above Correct answer: 2. Shunt element
In order to improve string efficiency by capacitance grading, the maximum capacitance belongs to the disc: That is nearest to cross arms That is nearest to conductor That is in middle of string None of above Correct answer: 2. That is nearest to the conductor