1- Reading of the barometer going down is an indication of:
A. Storm
B. Rainfall
C. Snow
D. Intense heat
View Answer
Answer : A. Storm
Description
2- Kilowatt is a unit to measure:
A. Work
B. Electricity
C. Power
D. Current
View Answer
Answer : C. Power
Description
3- Very small time intervals are accurately measured by the:
A. Pulsars
B. Quartz clocks
C. White dwarfs
D. Atomic clocks
View Answer
Answer : D. Atomic clocks
Description
4- The unit for measurement of magnetic induction is:
A. Joule
B. Grass
C. Gauss
D. Weber
View Answer
Answer : C. Gauss
Description
5- Which of the following is correct regarding the barometer commonly used in homes to see weather indication?
A. It is called Fortin’s barometer and uses mercury.
B. It is called Fortin’s barometer and uses alcohol.
C. It is called aneroid barometer and uses mercury.
D. None of these
View Answer
Answer : A. It is called Fortin's barometer and uses mercury.
Description
6- 1 Joule is equivalent to:
A. 10³ ergs
B. 10⁵ ergs
C. 10⁶ ergs
D. 10⁷ ergs
View Answer
Answer : D. 10⁷ ergs
Description
7- The normal human body temperature is approximately:
A. 36.5°C
B. 37°C
C. 37.5°C
D. 38°C
View Answer
Answer : B. 37°C
Description
8- The device that separates light into its component wavelengths is:
A. Polarimeter
B. Photometer
C. Interferometer
D. Spectrometer
View Answer
Answer : D. Spectrometer
Description
9- The picture tube of a black and white TV set has only one electron gun that produces the picture on its screen. The number of electron guns a colour picture tube has, is:
A. Three
B. Four
C. Five
D. Six
View Answer
Answer : A. Three
Description
10- The term Black Box is more commonly used in relation to which of the following?
A. It is a flight recorder in an aeroplane
B. It is a box in which high grade uranium is kept to prevent radiation
C. It is a time capsule in which records of important events are kept to be opened at a later date
D. None of these
View Answer
Answer : A. It is a flight recorder in an aeroplane
Description
11- Fish plates in railway track are used:
A. To join two coaches
B. To connect two rails
C. To guide the wheels of coach
D. None of these
View Answer
Answer : B. To connect two rails
Description
12- The lightning conductor used in buildings 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
View Answer
Answer : B. Conducting the lightning safely to the ground
Description
13- The jet plane engine works on the principle of:
A. Mass
B. Linear momentum
C. Energy
D. Angular momentum
View Answer
Answer : B. Linear momentum
Description
14- Sodium vapour lamps are preferred over incandescent lamps because of:
A. Higher intensity of illumination
B. Higher tolerance to voltage fluctuation
C. Easy installation
D. None of these
View Answer
Answer : A. Higher intensity of illumination
Description
15- The principle of working of periscope is based on:
A. Reflection only
B. Refraction only
C. Reflection and refraction
D. Reflection and interference
View Answer
Answer : A. Reflection only
Description
16- Rectifiers are used to convert:
A. Low voltage to high voltage
B. High voltage to low voltage
C. DC to AC
D. AC to DC
View Answer
Answer : D. AC to DC
Description
17- Which of the following instruments can a sailor in a submarine see the object on the surface of sea?
A. Periscope
B. Telescope
C. Gyroscope
D. Piezo electric effect
View Answer
Answer : A. Periscope
Description
18- A handwritten message can be instantly transmitted as such to any part of the world through:
A. FAX
B. Speed post
C. Telex
D. Electronic mail
View Answer
Answer : D. Electronic mail
Description
19- The number of points in a Marine's compass is:
A. 8
B. 24
C. 32
D. 64
View Answer
Answer : C. 32
Description
20- Which gas is most abundant in the Earth's atmosphere?
