Polytechnic Entrance Exam Sample Papers Free Download

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[Arvind Kumar]

As you want here I am giving below Polytechnic Entrance Exam Sample Papers on your demand :

Question 1: If the ratio of the second and third term in the expansion of (a + b)2 is equal to the ratio of third and fourth term in the expansion of (a + b ) n+3 then the value of n is equal to :

8
7
5
3

Answer: 3


Question 2: The equation of line which is parallel to the straight line 3x + 4y – 7 = 0 and passing through (1,2) is :

3x + 4y = 11
3x+4y+11= 0
4x-3y+2=0
3x+4y+7=0

Answer: 4x-3y+2=0

Question 3: A dice is thrown then the probability that the sum of the number is 1 or 6 is:

1/5
1/3
2/5
3/4

Answer: 1/3

Question 4: The sum of 20 terms of the series 1 + 4 + 7 + 10 +….is:

290
490
590
none of these

Answer: 590

Question 5: Which is correct for inside charged sphere?

E ≠ 0, V = 0
E=0, V= 0
E≠0, V≠0
E=0, V = 0

Answer: E=0, V = 0

Question 6: Function of a grid in a triode is:

to increase plate voltage
to decrease plate voltage
reduce the effect of space charge
None

Answer: to increase plate voltage



Question 7: The wavelengths associated with photons and electron are same, the ratio of their momentum will be:

1: 1
2: 1
1: 4
3: 2

Answer: 1

Question 8: Of which the velocity is equal to light velocity:

Cathode ray
X-rays
positive ray
all

Answer: X-rays

Question 9: If the pressure of a gas is doubled at constant temperature, then the velocity of Sound in the gas becomes:

unchanged
√2 times
half
double

Answer: unchanged

Question 10: Which quantity doesn’t remains constant in simple harmonic motion:

Time period
velocity
frequency
amplitude

Answer: velocity

Question 11: Brasses and bronzes are welded using

carburising flame
oxidizing flames
reducing flame
neutral flame

Answer: 4



Question 12: In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

30%
70%
100%
250%

Answer: 2

Question 13: A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Rs. 392, what was his profit?

18.20
70
72
88.25

Answer: 3

Question 14: On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:

45
50
55
60

Answer: 4

Question 15: The main chemical constituent of clay is

silicon oxide
aluminium borosilicate
zeolites
aluminium silicate

Answer: 4



Question 16: The percentage profit earned by selling an article for Rs. 1920 is equal to the percentage loss incurred by selling the same article for Rs. 1280. At what price should the article be sold to make 25% profit?

2000
2200
2400
Data inadequate

Answer: 3

Question 17: Supersonic plane fly with the speed

less than the speed of sound
of sound
greater than the speed of sound
of light

Answer: 3

Question 18: Rainbow is due to

absorption of sunlight in minute water droplets
diffusion of sunlight through water droplets
ionisation of water deposits
refraction and reflection of sunlight by water droplets

Answer: 4

Question 19: Stars which appear single to the naked eye but are double when seen through a telescope are

novas and supernovas
binaries
asteroids
quasars

Answer: 2

Question 20: The hardest form of carbon is

coke
graphite
diamond
charcoal

Answer: 3



Question 21: The main active constituent of tea and coffee is

nicotine
chlorophyll
caffeine
aspirin

Answer: 3