High Voltage Engineering MCQs Part 10. While installing sphere gaps, smaller sphere gaps are installed in While installing sphere gaps, smaller sphere gaps are installed in: Horizontal configuration Vertical configuration Any of these None of these Correct answer: 1. Horizontal configuration The impulse test of the transformer is done by using The impulse test of … Read more
Today Electrical Engineering shares most important High Voltage Engineering MCQs part 9. These MCQs are very important for your competitive exams and concepts testing. Let’s start learning. The term counterpoise in high voltage engineering is referred to: A large-sized sphere gap Galvanized wire which runs in parallel to the overhead line A surge arrester which … Read more
High Voltage Engineering MCQs Part 8 High voltage engineering for the insulation applications most likely requires High voltage engineering for the insulation applications most likely requires: Non-flammable gases with high dielectric strength Non-flammable gases with lower dielectric strength Flammable gases with high dielectric strength Flammable gases with lower dielectric strength Correct answer: 1. Non-flammable gases with … Read more
The most recommended gap under usual conditions for measuring the voltages is: Field gap Sphere gap Rod gap All of these Correct answer: 2. Sphere gap According to Paschen’s law, the breakdown voltage = __________: F (p/d) F / (pd) F (pd) F + p + d Correct answer: 3. F (pd) The voltage at … Read more
The dielectric strength of air is approx: 10 kV/in 20 kV/in 200 kV/in 5000 kV/in Correct answer: b. 20 kV/in ____________ is/are expected to have treeing phenomenon: Capacitors Cables Dielectrics All of these Correct answer: 4. All of these Chubb–Fortescue method of measurement of a.c peak voltage values contains: A capacitor, two diodes, an ammeter, a … Read more
Large power transformers are best protected by: Station type lightning arrestors Distribution type lightning arrestors Line type lightning arrestors None of these Correct answer: 1. Station type lightning arrestors A capacitance-resistance circuit is used to measure the ripple voltages in d.c system. During this process the important condition which should be met is: ω CR >> … Read more
The worst gap for measuring the voltages is: Field gap Sphere gap Rod gap All of these Correct answer: 3. Rod gap Usually Mole’s bridge is used to measure __________ frequency measurements: Low High Both of these None of these Correct answer: 1. Low Impulse tests are performed on transformers: To determine insulation ability against … Read more
The relative dielectric strength of SF6 as compared to air is: 1.5 times 2 times 2.5 times 3 times Correct answer: 2.5 times The correct statement about Paschen’s law states that breakdown voltage of a uniform gap is directly proportional to: Pressure of the gas Separation of electrode Material of electrode All of these 1 … Read more
High Voltage Engineering MCQs Part 2 The first step of transformer Impulse testing is to The first step of transformer Impulse testing is to: Apply an impulse whose magnitude equals 0.75 times the BIL Apply a chopped impulse whose magnitude is 2 times the BIL Apply a full wave impulse whose magnitude is 1.19 times … Read more
Today Electrical Engineering XYZ shares High Voltage Engineering MCQs Part 1 which are important for every Power Engineer, Technician. Go to main HV page for more MCQs on HV Engineering. Let’ start learning: Marx multistage impulse generator model involves Marx multistage impulse generator model involves: High ohmic resistances Low ohmic resistances Both of these None … Read more