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1
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements about a satellite orbiting around the earth is correct?
A
Satellite is kept in orbit by remote control from ground station.
B
Satellite is kept in orbit by retro-rocket and solar energy keeps it moving around the earth.
C
Satellite requires energy from solar panels and solid fuels for orbiting.
D
Satellite does not required any energy for orbiting.
2
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements about energy is correct?
A
Energy can be created as well as destroyed.
B
Energy can be created but not destroyed.
C
Energy can neither be created nor destroyed.
D
Energy cannot be created but can be destroyed.
3
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Step-up transformers are used for
A
increasing electrical power
B
decreasing electrical power
C
decreasing voltage
D
increasing voltage
4
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one among the following waves carries the maximum energy per photon?
A
X-rays
B
Radio waves
C
Light waves
D
Microwaves
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