Questions

Q:

The purpose of choke in tube light is

A) Induce high voltage B) Induce low resistance
C) Induce high resistance D) Induce low voltage
 
Answer & Explanation Answer: A) 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.

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Filed Under: Physics
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31 17937
Q:

Who was known as the 'Father of Lok sabha'

A) Anantasayanam B) Bashyam
C) Mavlankar D) Zkir Hussain
 
Answer & Explanation Answer: C) Mavlankar

Explanation:
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64 17921
Q:

The first Census in India during the British period was held during the tenure of

A) Lord Dufferin B) Lord Lytton
C) Lord Mayo D) Lord Ripon
 
Answer & Explanation Answer: C) Lord Mayo

Explanation:
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Filed Under: Indian Economy

37 17919
Q:

Pravin Amre and Vinod Kambli played for which province in south Africa

A) Border B) Boland
C) Griqualand West D) Gauteng
 
Answer & Explanation Answer: B) Boland

Explanation:
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Filed Under: Sports

32 17900
Q:

What do eukaryotic cells have that prokaryotic cells do not?

A) Nucleus B) Cytoplasm
C) Ribosomes D) DNA
 
Answer & Explanation Answer: A) Nucleus

Explanation:

ep1527656002.jpg image

Eukaryotic cells contain membrane-bound organelles, including a nucleus. Eukaryotes can be single-celled or multi-celled, such as you, me, plants, fungi, and insects.

 

Whereas Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle. Bacteria are an example of prokaryotes.

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Filed Under: Biology
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34 17895
Q:

What will come in place of question mark (?) in the following question?

34 of 35 of 23 of ? = 3174

A) 10550 B) 10540
C) 10580 D) 10500
 
Answer & Explanation Answer: C) 10580

Explanation:

23x35x34x?=31743174x10/3= 10580

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0 17866
Q:

Who of the following is NOT related to ghazal singing?

 

A) Begum Akhtar   B) Malika Pukhraj  
C) Penaz Masani   D) Haribhai Varadkar  
 
Answer & Explanation Answer: D) Haribhai Varadkar  

Explanation:
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0 17851
Q:

Eye Test Logical Challenge

lines1499317691.jpg image

A) 15 B) 14
C) 16 D) 17
 
Answer & Explanation Answer: A) 15

Explanation:
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Filed Under: Logic Puzzles
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58 17850