Switchgear & Protection Test Question
Switchgear & Protection Test Question, this topic has 192 mcqs, It takes five to ten minutes to complete this free Switchgear & Protection Test Question test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "Switchgear & Protection Test Question" MCQs and share with your friends, brothers, sisters.
Switchgear & Protection Test Question (Total Quiz: 192)
MCQ: What is fusing factor?
- The ratio of current rating of the fuse to the minimum fusing current
- The ratio of minimum fusing current to the current rating of the fuse
- The ratio of maximum fusing current to the current rating of the fuse
- The ratio of minimum fusing current to the voltage rating of the fuse
B
MCQ: What should be the value of fusing factor?
- Equal to zero
- Equal to one
- Less than one
- More than one
C
MCQ: A fuse wire of circular cross section has a radius of 0.8mm. The wire blows off at a current of 9A. What will be the radius of the wire that will blow off at a current of 1A?
- 0.2 mm
- 0.18 mm
- 0.28 mm
- 0.3 mm
B
MCQ: Which among these tests are performed to check the nation or international standards?
- Type test.
- Production tests.
- Site checks.
- All of the above.
A
MCQ: If the strands of the fusing wire are twisted, what happens to the fusing current?
- Increases
- Reduces
- No change/ remains same
- Depends on the value of current, increases or decreases.
B
MCQ: What is the cut off current in the fuse?
- Maximum value actually reached.
- Rms value actually reached.
- Average value actually reached.
- None of the above
A
MCQ: What is the advantage of HRC fuses over Rewirable fuses?
- High speed operation
- High rupturing capacity
- No ageing effect.
- All of the above.
D
MCQ: Which material is used in the liquid type of fuse?
- SF6
- Distilled water
- Carbon tetra chloride.
- Mineral oil / transformer oil
C