Which of the following scientists postulated that moving particles exhibit wave properties?
A. Niels Bohr B. Ernest Rutherford C. Werner Heisenberg D. Louis de Broglie E. Erwin Schroedinger Correct Answer: Option D – Louis de Broglie
Which of the following is not a part of an A.C generator?
A. Carbon brushes B. Slip rings C. Commutator D. Field magnet E. Armature Correct Answer: Option C – Commutator
Beta particles are?
A. electrons B. protons C. neutrons D. helium nuclei E. tritium nuclei Correct Answer: Option A – electrons
A transformer with 5500 turns in its primary winding is used between a 240V a.c supply and 120V kettle. Calculate the number of turns in the secondary winding
A. 11000 B. 2750 C. 460 D. 550 E. 232 Correct Answer: Option B – 2750Products
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