1
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice-versa?
A
Generator
B
Motor
C
Transformer
D
Vibrator
2
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
An optical illusion which occurs mainly in deserts during hot summer is based on the principle of
A
reflection
B
interference
C
dispersion
D
total internal reflection
3
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
At which place earth's magnetic field becomes horizontal?
A
Magnetic meridian
B
Magnetic equator
C
Geographical pole
D
Tropic of cancer
4
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The speed of a car travelling on a straight road is listed below at successive intervals of 1 s.

Image

Which of the following is/are correct? The car travels

1. with a uniform acceleration of 2 m/s2.

2. 16 m in 4 s.

3. with an average speed of 4 m/s.
A
Only 1
B
2 and 3
C
1 and 2
D
All of these
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