Q1. Which of the following method used for making magnets
(A) Single touch method
(B) Divided touch method
(C) Double touch method
(D) All of the above

Q2. guiding curve of a right circular cylinder is
(A) ellipse
(B) circle
(C) pair of straight lines
(D) any closed curve

Q3. the loudness of sound wave is determined by its
(A) wave length
(B) speed
(C) frequency
(D) amplitude

Q4. sound travel at maximum speed in
(A) water
(B) vacuum
(C) steel
(D) air

Q5. sound can not travel through
(A) water
(B) steel
(C) vacuum
(D) hydrogen gas

Q6. which of the following device convert electric energy to mechanical energy
(A) electric motor
(B) dynamo
(C) transformer
(D) inductor

Q7. we get energy directly from
(A) space
(B) sun
(C) atmosphere
(D) ocean

Q8. which of the following is a semi conductor
(A) silicon
(B) glass
(C) wood
(D) phosphorus

Q9. an electric appliances is earthed to
(A) prevent shock
(B) avoid short circuit
(C) protect the appliance against any damage
(D) reduce consumption

Q10. an electric bulb has a filament made of
(A) lead
(B) iron
(C) tungsten
(D) copper

Q11. the nucleus of an atom contains
(A) protons and electron
(B) neutrons and electron
(C) only neutron
(D) protons and neutrons

Q12. transformer working principles
(A) kirchoff law
(B) guess law
(C) fradays law
(D) mutual inductance

Q13. transformer is operate
(A) ac and dc supply
(B) dc supply only
(C) only ac supply
(D) all of above

Q14. In arc welding, temp. of arc is
(A) 100 degree celsius
(B) 1470 degree celsius
(C) 1000 degree celsius
(D) 3500 degree celsius

Q15. Unit of luminous flux
(A) siemen
(B) lux
(C) candle
(D) lumen

Q16. Velocity of wind is measured by
(A) Speedometer
(B) Anemometer
(C) tachometer
(D) multimeter

Q17. The weight of a body at the centre of the Earth is ____
(A) Zero
(B) Infinite
(C) Same as
(D) None of this

Q18. A geostationary satellite ____
(A) revolves about the polar axis
(B) Has a time period less than that of the near Earth satellite
(C) moves faster than a near earth satellite
(D) is stationary in the space

Q19. Which of the following is a derived unit?
(A) Mass
(B) Time
(C) Length
(D) Velocity

Q20. x-ray invented by
(A) rontgen
(B) Einstein
(C) crook and watson
(D) Goldsmith

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