What is the unit for measuring the pitch or frequency of sound?
(A) Coulomb
(B) Hum
(C) Decibel
(D) Hertz
Important Questions on General Science
Kilohertz is a unit which measures-
(A) Electrical resistance
(B) Power used by a current of one ampere
(C) Electromagnetic radio wave frequencies
(D) None of these
Match the following--
|
(a) Resistance |
1. Ampere |
| (b) Current | 2. Newton |
| (c) Force | 3. Watt |
| (d) Power | 4. Ohm |
Codes:
| (a) | (b) | (c) | (d) | |
| (A) | 1 | 4 | 3 | 2 |
| (B) | 4 | 1 | 2 | 3 |
| (C) | 1 | 2 | 4 | 3 |
| (D) | 4 | 2 | 3 | 1 |
An ordinary tubelight used for lighting purpose contains --
(A) Fluroscent material and an inert gas
(B) One filament, reflective and mercury vapour
(C) Fluroscent material and mercury vapour
(D) Two filaments , fluroscent material and mercury vapour
The term 'Black box' is more commonly used in relation to which of the following ?
(A) It is a box in which high grade uranium is kept to prevent radiation.
(B) It is a time capsule in which records of important events are kept to be opened at a later date
(C) It is a flight recorder in an aeroplane
(D) None of these
The lightning conductors used in building, protects the building by--
(A) Dissipating the electric charge away from the building
(B) Conducting the lightning safely to the ground
(C) Absorbing the electric charge
(D) None of these
Match the following-
| (a) Petrol engine | 1. Compression |
|
(b) Diesel engine |
2. Spark plug |
| (c) Ship | 3. Turboprop |
| (d) Jet aircraft | 4. propeller |
Codes:
| (a) | (b) | (c) | (d) | |
| (A) | 1 | 2 | 3 | 4 |
| (B) | 2 | 1 | 4 | 3 |
| (C) | 1 | 2 | 4 | 3 |
| (D) | 2 | 1 | 3 | 4 |
The hydraulic brakes used in automobiles is a direct application of--
(A) Archimedes Principle
(B) Toricellian law
(C) Bernoulli's theorem
(D) Pascal's law
Which of the following statements is correct ?
(A) Dynamo converts electrical energy into heat energy and electric motor converts mechanical energy into electrical energy
(B) Dynamo converts electrical energy into heat energy and electric motor converts mechanical energy into electrical energy
(C) Both dynamo and electric motor convert electrical energy into mechanical energy.
(D) Both dynamo and electric motor convert electrical energy into mechanical energy.
