Transmission And Distribution — Part 2 MCQs with Explanations

20 - 25 km is the correct answer to “Transmission voltage of ll kV is normally used for distances upto”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Ferranti effect is the correct answer to “The phenomenon of rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Small is the correct answer to “Series capacitors on transmission lines are of little use when the load VAR requirement is”. This question is standard in competitive examination syllabi for Transmission And Distribution.

230 V is the correct answer to “The voltage of the single phase supply to residential consumers is”. This question is standard in competitive examination syllabi for Transmission And Distribution.

25 to 30 years is the correct answer to “The wooden poles well impregnated with creosite oil or any preservative compound have life”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Any of the above is the correct answer to “The use of strain type insulators is made where the conductors are”. This question is standard in competitive examination syllabi for Transmission And Distribution.

31.25 percent of copper is the correct answer to “As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only”. This question is standard in competitive examination syllabi for Transmission And Distribution.

There is no current in the line is the correct answer to “A circuit is disconnected by isolators when”. This question is standard in competitive examination syllabi for Transmission And Distribution.

66 kV is the correct answer to “Large industrial consumers are supplied electrical energy at”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Three-phase four wire is the correct answer to “The distributors for residential areas are”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Paper is the correct answer to “The material commonly used for insulation in high voltage cables is”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Steel is the correct answer to “The material generally used for armour of high voltage cables is”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Single bus-bar scheme is the correct answer to “Which of the following bus-bar schemes has the lowest cost”. This question is standard in competitive examination syllabi for Transmission And Distribution.

30 kV (maximum value)/cm is the correct answer to “Corona usually occurs when the electrostatic stress in air around the conductor exceeds”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Electrical conductivity is the correct answer to “For aluminium, as compared to copper, all the following factors have higher values except”. This question is standard in competitive examination syllabi for Transmission And Distribution.

A long line is the correct answer to “310 km line is considered as”. This question is standard in competitive examination syllabi for Transmission And Distribution.

All of the above is the correct answer to “Galvanized steel wire is generally used as”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Short transmission lines is the correct answer to “In the analysis of which of the following lines shunt capacitance is neglected”. This question is standard in competitive examination syllabi for Transmission And Distribution.

80-100 meters is the correct answer to “The usual spans with R.C.C. poles are”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Lagging is the correct answer to “The power factor of industrial loads is generally”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Varying the reactance is the correct answer to “The voltage regulation in magnetic amplifier type voltage regulator is effected by”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Short-circuit current of the system is increased is the correct answer to “Constant voltage transmission entails the following disadvantage”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Current will flow to earth is the correct answer to “When a live conductor of public electric supply breaks down and touches the earth which of the following will happen”. This question is standard in competitive examination syllabi for Transmission And Distribution.

100-200 ohms is the correct answer to “For an overhead line, the surge impedance is taken as”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Ring main system is the correct answer to “Which of the following distribution systems is more reliable”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Overhead is the correct answer to “Most of the high voltage transmission lines in India are”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Humid weather is the correct answer to “There is a greater possibility of occurrence of corona during”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Any of the above is the correct answer to “By which of the following methods string efficiency can be improved”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Lead is the correct answer to “The material commonly used for sheaths of underground cables is”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Isolators is the correct answer to “For which of the following equipment current rating is not necessary”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Synchronous motors is the correct answer to “The voltage drop, for constant voltage transmission is compensated by installing”. This question is standard in competitive examination syllabi for Transmission And Distribution.

66 kV is the correct answer to “The operating voltage of extra high tension cables is upto”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Skin effect is the correct answer to “When a conductor carries more current on the surface as compared to core, it is due to”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Tungsten is the correct answer to “Which of the following materials is not used for transmission and distribution of electrical power”. This question is standard in competitive examination syllabi for Transmission And Distribution.

132 kV is the correct answer to “For transmission of power over a distance of 200 km, the transmission voltage should be”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Mild steel is the correct answer to “The steel used in steel cored conductors is usually”. This question is standard in competitive examination syllabi for Transmission And Distribution.

equalize voltages on the positive and negative outers is the correct answer to “In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Silica is the correct answer to “Which of the following is not a constituent for making porcelain insulators”. This question is standard in competitive examination syllabi for Transmission And Distribution.

Steel is the correct answer to “In transmission lines the cross-arms are made of”. This question is standard in competitive examination syllabi for Transmission And Distribution.

66 V is the correct answer to “The underground system cannot be operated above”. This question is standard in competitive examination syllabi for Transmission And Distribution.