As compared to winter, the sag of transmission lines in summer is| Power Transmission and Distribution MCQ#76
As compared to winter, the sag of transmission lines in summer is: More Less Same Correct answer: 1. More
As compared to winter, the sag of transmission lines in summer is: More Less Same Correct answer: 1. More
The sag in transmission lines depends on which factor: Length of transmission lines Temperature of surrounding Weight of conductors All of these Correct answer: 4. All of these
The factor having least effect on sag of transmission lines: Weight of conductor Current passing through conductor Ice fall Atmospheric temperature Correct answer: 2. Current passing through conductor
The required dry flashover voltage for porcelain is about how many times the rated voltage: 1 – 1.5 times 1.5 – 2 times 2.5 – 3 times 30 times Correct answer: 3. 2.5 – 3 times
The minimum insulation requirement of a 500 kV line is: 139 kV 228 kV 317 kV 692 kV Correct answer: 3. 317 kV From formula: 500 kV * 1.1 / 1.732 = 317 kV
What is This Electrical Engineering MCQ#1 Correct answer: 1. LDR The component shown above is Light Dependent Resistor or LDR. LDR which is also known as photoresistor is a component whose resistance decreases with respect to receiving luminosity.
The wire which is connected so as to provide stability and support to transmission line poles is known as: (See Figure below) Ground wire Support Syst Guy wire Friendly cable Correct answer: 3. Guy wire Explanation: The wire which is connected so as to provide stability and support to transmission line poles is known as … Read more
The correct statement about conductivity of aluminum as compared to copper: Aluminum has high conductivity Copper has high conductivity Both have same conductivity None of these Correct answer: 2. Copper has high conductivity
Larger cross-arms are required in case of which conductor: Aluminum Copper Both required same Correct answer: 1. Aluminum Explanation: Since the Aluminum conductor is light as compared to the copper conductor, it is liable to greater swings and thus required larger cross arms.
The specific gravity of Aluminum as compared to copper is: Lower Higher Same Correct answer: 1. Lower Explanation: The specific gravity of aluminum is 2·71 gm/cc which is lower than copper. Copper has specific gravity of 8·9 gm/cc