logo

CuriousTab

CuriousTab

Discussion


Home General Knowledge Physics See What Others Are Saying!
  • Question
  • The purpose of choke in tube light is


  • Options
  • A. Induce high voltage
  • B. Induce low resistance
  • C. Induce high resistance
  • D. Induce low voltage

  • Correct Answer
  • Induce high voltage 

    Explanation

    When the switch is ON, in a tube light choke is nothing but the coil/ballast ( inductor) which is used to induce the high voltage across it. as we know that inductor has property to induce high voltage for the brief period of time, this high voltage is required to ionize the gases in the starter.

    Then gas inside the starter gets ionized due to this full voltage and heats the bimetallic strip that is caused to be bent to connect to the fixed contact. Current starts flowing through the starter. Although the ionization potential of the neon is the little bit more than that of the argon but still due to small electrode gap high voltage gradient is appeared in the neon bulb and hence glow discharge is started first in a starter.

    As voltage gets reduced due to the current causes a voltage drop across the inductor, the strip cools and breaks away from the fixed contact. At that moment a large L di/dt voltage surge comes across the inductor at the time of breaking.

    This high valued surge comes across the tube light electrodes and strikes penning mixture (mixture argon gas and mercury vapor).

    Gas discharge process continues and current gets the path to flow through the tube light gas only due to low resistance as compared to the resistance of starter.

  • Tags: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO

    More questions

    • 1. Balloons are filled with

    • Options
    • A. oxygen
    • B. nitrogen
    • C. argon
    • D. helium
    • Discuss
    • 2. Soil erosion on hillslopes can be checked by

    • Options
    • A. Terrace cultivation
    • B. Contour ploughing
    • C. Afforestation
    • D. Strip cropping
    • Discuss
    • 3. Read the passage carefully and choose the best answer to each question out of the four alternatives. My coat's pretty warm, even though it cost £9.99 and came from the flea market. It had a label in it, CHRISTIN BIOR, but I cut it out as soon as I got home. You can't work where I work and have CHRISTIN BIOR in your coat. You could have a genuine vintage Christian Dior label. Or something Japanese. Or maybe no label because you make your clothes yourself out of retro fabrics that you source at Alfies Antiques. But not CHRISTIN BIOR. As I get near Catford Bridge, I start to feel a knot of tension. I really don't want to be late today. My boss has started throwing all sorts of hissy fits about people "swanning in at all times," so I left an extra twenty minutes early, in case it was a bad day. I can already see: It's a god-awful day. They've been having a lot of problems on our line recently and keep cancelling trains with no warning. Trouble is, in London rush hour, you can't just cancel trains. What are all the people who were planning to get on that train supposed to do? Evaporate? What aspect of the coat she wanted to hide?

    • Options
    • A. That is was too warm.
    • B. That it was a cheap copy.
    • C. That it was expensive.
    • D. That it was from a luxury market.
    • Discuss
    • 4. Read the passage carefully and choose the best answer to each question out of the four alternatives. My coat's pretty warm, even though it cost £9.99 and came from the flea market. It had a label in it, CHRISTIN BIOR, but I cut it out as soon as I got home. You can't work where I work and have CHRISTIN BIOR in your coat. You could have a genuine vintage Christian Dior label. Or something Japanese. Or maybe no label because you make your clothes yourself out of retro fabrics that you source at Alfies Antiques. But not CHRISTIN BIOR. As I get near Catford Bridge, I start to feel a knot of tension. I really don't want to be late today. My boss has started throwing all sorts of hissy fits about people "swanning in at all times," so I left an extra twenty minutes early, in case it was a bad day. I can already see: It's a god-awful day. They've been having a lot of problems on our line recently and keep cancelling trains with no warning. Trouble is, in London rush hour, you can't just cancel trains. What are all the people who were planning to get on that train supposed to do? Evaporate? The author would prefer to be seen wearing all of the following types of clothes, except?

    • Options
    • A. Those with the Christian Dior label.
    • B. Any Japanese brand.
    • C. Clothes stitched by herself.
    • D. Those with the CHRISTIN BIOR label.
    • Discuss
    • 5. Read the passage carefully and choose the best answer to each question out of the four alternatives. My coat's pretty warm, even though it cost £9.99 and came from the flea market. It had a label in it, CHRISTIN BIOR, but I cut it out as soon as I got home. You can't work where I work and have CHRISTIN BIOR in your coat. You could have a genuine vintage Christian Dior label. Or something Japanese. Or maybe no label because you make your clothes yourself out of retro fabrics that you source at Alfies Antiques. But not CHRISTIN BIOR. As I get near Catford Bridge, I start to feel a knot of tension. I really don't want to be late today. My boss has started throwing all sorts of hissy fits about people "swanning in at all times," so I left an extra twenty minutes early, in case it was a bad day. I can already see: It's a god-awful day. They've been having a lot of problems on our line recently and keep cancelling trains with no warning. Trouble is, in London rush hour, you can't just cancel trains. What are all the people who were planning to get on that train supposed to do? Evaporate? Why is her boss angry?

    • Options
    • A. Because he has started suffering from fits.
    • B. Because it is a bad day.
    • C. Because she was late the day before.
    • D. Because employees are coming late to work.
    • Discuss
    • 6. Read the passage carefully and choose the best answer to each question out of the four alternatives. My coat's pretty warm, even though it cost £9.99 and came from the flea market. It had a label in it, CHRISTIN BIOR, but I cut it out as soon as I got home. You can't work where I work and have CHRISTIN BIOR in your coat. You could have a genuine vintage Christian Dior label. Or something Japanese. Or maybe no label because you make your clothes yourself out of retro fabrics that you source at Alfies Antiques. But not CHRISTIN BIOR. As I get near Catford Bridge, I start to feel a knot of tension. I really don't want to be late today. My boss has started throwing all sorts of hissy fits about people "swanning in at all times," so I left an extra twenty minutes early, in case it was a bad day. I can already see: It's a god-awful day. They've been having a lot of problems on our line recently and keep cancelling trains with no warning. Trouble is, in London rush hour, you can't just cancel trains. What are all the people who were planning to get on that train supposed to do? Evaporate? What has been the problem with London trains lately?

    • Options
    • A. The trains have become awful.
    • B. There are more trains during rush hour.
    • C. People are late to work because of train delays.
    • D. Trains are cancelled without prior intimation.
    • Discuss
    • 7. Yoga city in India?

    • Options
    • A. Varanasi
    • B. Allahabad
    • C. Rishikesh
    • D. Amritsar
    • Discuss
    • 8. What is laughing gas?

    • Options
    • A. Nitrous Oxide
    • B. Carbon monoxide
    • C. Sulphur dioxide
    • D. Hydrogen peroxide
    • Discuss
    • 9. Read the passage carefully and choose the best answer to each question out of the four alternatives. My coat's pretty warm, even though it cost £9.99 and came from the flea market. It had a label in it, CHRISTIN BIOR, but I cut it out as soon as I got home. You can't work where I work and have CHRISTIN BIOR in your coat. You could have a genuine vintage Christian Dior label. Or something Japanese. Or maybe no label because you make your clothes yourself out of retro fabrics that you source at Alfies Antiques. But not CHRISTIN BIOR. As I get near Catford Bridge, I start to feel a knot of tension. I really don't want to be late today. My boss has started throwing all sorts of hissy fits about people "swanning in at all times," so I left an extra twenty minutes early, in case it was a bad day. I can already see: It's a god-awful day. They've been having a lot of problems on our line recently and keep cancelling trains with no warning. Trouble is, in London rush hour, you can't just cancel trains. What are all the people who were planning to get on that train supposed to do? Evaporate? Which of the following situations creates a 'bad day' for the author?

    • Options
    • A. Being caught wearing a cheap brand coat.
    • B. Cancelled trains during London rush hour.
    • C. When other employees are on time but she is late.
    • D. Having to spend money on expensive clothes.
    • Discuss
    • 10. In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'. My best wishes (1)/ are always (2)/ with you. (3)/ No error (4)

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss


    Comments

    There are no comments.

Enter a new Comment