Previous year MCQs

General science UPPSC 1993 GS-I
Question

Main function of Dynamo is?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: To convert the mechanical energy into electric energy

Detailed Solution:

The correct answer is “To convert the mechanical energy into electric energy”.
A dynamo is a type of electrical generator that uses the principles of electromagnetic induction to convert mechanical energy (like rotation) into electrical energy.

Similar Questions:

Photo chemical smog always contains
  1. A) Phosphorus
  2. B) Ozone
  3. C) Methane
  4. D) Aluminium ion
The mirror used by the dentists to see the teeth of the patients is:
  1. A) concave
  2. B) convex
  3. C) none of these
  4. D) plane
The mirror used by a dentist to examine the teeth of patients is
  1. A) Concave
  2. B) Convex
  3. C) Plane
  4. D) Cylinderical
Which hormone is injected to cows and buffaloes to make the milk descend to the udders?
  1. A) Somatotropin
  2. B) Oxytocin
  3. C) Interferon
  4. D) Insulin
Transformer is used for
  1. A) Converting AC into DC
  2. B) Converting DC into AC
  3. C) To step up DC voltages
  4. D) To step up or step down AC voltages
Which of the following periods has generally been considered to be the 'Little Ice Age'?
  1. A) 730 A.D. - 850 A.D.
  2. B) 950 A.D. - 1250 A.D.
  3. C) 1650 A.D. - 1870 A.D.
  4. D) 8000 to 10,000 years B.P. (Before Present)
Match List - I with List - II and select the correct answer using the codes given below the lists:
List - I (Substance) - List - II (Use)

A. Blue Vitriol - 1. Artificial rain
B. Eosin - 2. Fungicide
C. Silver iodide - 3. Red ink
D. Zinc phosphide - 4. Rodenticide
  1. A) 2 3 4 1
  2. B) 2 1 3 4
  3. C) 2 3 1 4
  4. D) 2 4 1 3
Rowlatt act was enforced in the year of?
  1. A) 1909
  2. B) 1919
  3. C) 1913
  4. D) 1914
Which one of the following gases is used for the purification of drinking water?
  1. A) Sulphur dioxide
  2. B) Chlorine
  3. C) Fluorine
  4. D) Carbon dioxide
The gas used in artificial ripening of unripe fruit is
  1. A) Acetylene
  2. B) Ethane
  3. C) Hydrogen
  4. D) Carbon dioxide
Nation Health policy was declared in the year:
  1. A) 1983
  2. B) 1987
  3. C) 1976
  4. D) 1980
The radar is used for:
  1. A) detecting objects lightwaves
  2. B) detecting objects by reflection of sound waves
  3. C) determining the position of objects by radio waves
  4. D) following rain clouds