General Science Practice Question and Answer
8 Q: Which of the following is a disease caused by bacteria?
814 060363803e62cee435672f5ba
60363803e62cee435672f5ba- 1Titanustrue
- 2Malariafalse
- 3Poliomyelitisfalse
- 4Filariafalse
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Answer : 1. "Titanus"
Explanation :
All of these diseases are caused by bacteria i.e. Pneumonia, Cholera, Tuberculosis. Cancer is caused by uncontrolled cell division. Pneumonia is caused by a bacterium Streptococcus pneumoniae. Cholera is caused by a bacterium Vibrio cholerae.
Q: Which of the following hitting methods has the highest power factor?
1738 05ef417b67c1ec61320b5a6c6
5ef417b67c1ec61320b5a6c6- 1heating resistancetrue
- 2induction heatingfalse
- 3Arc heatingfalse
- 4Dielectric heatingfalse
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Answer : 1. "heating resistance"
Explanation :
The correct answer is Resistance Heating. Resistance heating is based on the I2R effect and is highly resistive in nature that's why it has the maximum power factor. Electric resistance heating is defined as “the heat produced by passing an electric current through a material that preferably has high resistance”.
Q: Which of the following is not a seafood fish of India?
1449 05ee836d979b5ea388bebeaeb
5ee836d979b5ea388bebeaeb- 1Surmaifalse
- 2Udanminfalse
- 3Echinodermstrue
- 4Hilsafalse
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Answer : 3. "Echinoderms"
Explanation :
The option that is not a seafood fish of India is:
(C) Echinoderms
Explanation:
Echinoderms, such as sea cucumbers and starfish, are not fish. They belong to a different phylum (Echinodermata) and are not typically consumed as seafood fish.
On the other hand:
Surmai is a type of kingfish and is a seafood fish commonly found in Indian waters.
Udanmin appears to be a misspelling, and without clarification, it's not clear what specific fish it refers to.
Hilsa is a type of herring and is a well-known and widely consumed seafood fish in India.
Therefore, the correct answer to the question is (C) Echinoderms.
Q: Electricity is generated when the drivers rotate between the magnetic fields?
1192 05ef44b332d6fc772f50b9337
5ef44b332d6fc772f50b9337- 1Movingtrue
- 2stablefalse
- 3Both static and dynamicfalse
- 4None of thesefalse
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Answer : 1. "Moving"
Explanation :
In a generator, a rotating magnetic field is used to produce electrical energy. When a conductor, such as a wire, moves through a magnetic field, a voltage is induced across the conductor. This is known as electromagnetic induction, and it is the fundamental principle behind how generators work.
Q: Capacity when connecting capacitors to series?
1227 15ef44a6ed7fe817321989d68
5ef44a6ed7fe817321989d68- 1neither increases nor decreasesfalse
- 2increasestrue
- 3decreasesfalse
- 4None of the abovefalse
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Answer : 2. "increases"
Explanation :
A capacitor stores energy in the form of an electrostatic field between its plates. Increasing the size of the plates increases the capacitance because there is more room for the electrons to escape.
Q: What is the coupling of primary and secondary coils in a transformer?
1271 05ef4495d2d6fc772f50b8ceb
5ef4495d2d6fc772f50b8ceb- 1Electricalfalse
- 2Mechanicalfalse
- 3Magnetictrue
- 4All thesefalse
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Answer : 3. "Magnetic"
Explanation :
The secondary coil is also generating a magnetic field that is growing and shrinking just like the field in the primary coil. This coupling of magnetic energy between these two coils is called mutual induction.
Q: Most commonly used motor in motor generator sets of high capacity?
1747 05ef417197c1ec61320b5a64d
5ef417197c1ec61320b5a64d- 1Cage Model Induction Motorfalse
- 2synchronous motortrue
- 3DC Compounder Motorfalse
- 4None of the abovefalse
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Answer : 2. "synchronous motor"
Explanation :
The tendency nowadays is to use synduction or synchronous motors. The synduction motor resembles an induction motor but runs at synchronous speed.
Q: Are fan boxes installed in roofs?
1494 05ef4167fd40ebf3f783329a5
5ef4167fd40ebf3f783329a5- 1Casing-keeping wiringfalse
- 2in cleat wiringfalse
- 3in conduit wiringtrue
- 4Wiringfalse
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Answer : 3. "in conduit wiring"
Explanation :
Most building codes require ceiling fans to be mounted on special fan-rated boxes made of metal or strong plastic with deep-threaded holes for the mounting screws. The box must be mounted firmly by attaching it directly to a framing member or using a fan-rated brace.