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## Polytechnic Sample Paper

Solving Polytechnic Sample Paper is the best way to refine the Polytechnic Examination preparation.  The Polytechnic Previous Year Question Papers helps entrants in getting knowledge about the level of imminent examination.

By practicing questions from Polytechnic Previous Question Papers With Answers, you will get to know the structure of exam. Besides this, Polytechnic Model Paper will guarantee success in engineering entrance.

पॉलिटेक्निक इंजीनियरिंग प्रवेश परीक्षा 2021:

पॉलिटेक्निक 2021 की आवेदन की प्रक्रिया कुछ समय में शुरु होने वाली है। हर साल हजारों छात्र पॉलिटेक्निक प्रवेश परीक्षा में इंजीनियरिंग में डिप्लोमा के लिए भाग लेते है।

पॉलिटेक्निक प्रश्न पत्र यहाँ देखे:

अगर आप दसवीं पास के बाद इंजीनियरिंग के क्षेत्र में जाना चाहते है, तो पॉलिटेक्निक आपके लिए सबसे बढ़िया मौका है।इसकी परीक्षा में दसवीं का सिलेबस आता है, उम्मीदवार पॉलिटेक्निक सैंपल पेपर तथा पॉलिटेक्निक प्रश्न पत्र यहाँ से डाउनलोड करे।

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### Polytechnic Sample Paper

Ques.1: The assumption in the theory of bending of beams, is :

1. material is homogeneous
2. material is isotropic
3. Young’s modulus is same in tension as well as in compression
4. each layer is independent to expand or to contract
5. all the above.

Ques.2: The shape factor of standard rolled beam section varies from

1. 1.10 to 1.20
2. 1.20 to 1.30
3. 1.30 to 1.40
4. 1.40 to 1.50

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Ques.3: Shear strain energy theory for the failure of a material at elastic limit, is due to

1. Rankine
2. Guest or Trecas
3. Venant
4. Haig
5. Von Mises

Ques.4: The point of contraflexure is the point where

1. M. changes sign
2. M. is maximum
3. M. is minimum
4. F. is zero.

Ques.5: The normal component of a force inclined through θ° is obtained by multiplying the force by

1. sin θ
2. cos θ
3. tan θ
4. sin θ cos θ
5. sin2θ

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Ques.6: Stress may be defined as

1. force per unit length
2. force per unit volume
3. force per unit area
4. none of these

Ques.7: Total strain energy theory for the failure of a material at elastic limit, is known

1. Guest’s or Trecas’ theory
2. Venant’s theory
3. Rankine’s theory
4. Haig’s theory
5. Von Mises’s theory.

Ques.8: In a mortar, the binding material is

1. cement
2. sand
3. surkhi

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Ques.9: Lacquer paints

1. are generally applied on structural steel
2. are less durable as compared to enamel paints
3. consist of resin and nitro-cellulose
4. contain alcohol as thinner
5. all the above.

Ques.10: Wrought iron contains carbon upto

1. 25%
2. 0%
3. 5%
4. 2%.

Ques.11: Pick up the polymineralic rock from the following:

1. Quartz sand
2. Pure gypsum
3. Magnesite
4. Granite
5. None of these.

Ques.12: Pick up the correct statement from the following:

1. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
2. For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
3. For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55
4. For massive concrete structures which remain continuously under water, the water cement ratio by weight should be 0.65
5. All the above.

Ques.13: The centre of gravity of a triangle is at the point where three

1. medians of the triangle meet
2. perpendicular bisectors of the sides of the triangle meet
3. bisectors of the angle of the triangle meet
4. none of these.

Ques.14: The forces which meet at one point and have their lines of action in different planes are called

1. coplaner non-concurrent forces
2. non-coplaner concurrent forces
3. non-coplaner non-current forces
4. intersecting forces
5. none of these.

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Ques.15: At a given instant ship A is travelling at 6 km/h due east and ship B is travelling at 8 km/h due north. The velocity of B relative to A is

1. 7 km/hrs
2. 2 km/hrs
3. 1 km/hrs
4. 10 km/hrs
5. 14 km/hrs.

Ques.16: The equation of motion of a particle starting from rest along a straight line is x = t3 – 3t2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be

1. 2
2. 3
3. 4
4. 5

Ques.17: The locus of the instantaneous centre of a moving rigid body, is

1. straight line
2. involute
3. centroid

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Ques.18: Ultimate strength to cement is provided by

1. Tricalcium silicate
2. Di-calcium silicate
3. Tri-calcium aluminate
4. Tetra calcium alumino ferrite.

Ques.19: Elastmers can extend upto

1. five times their original dimensions
2. seven times their original dimensions
3. ten times their original dimensions
4. three times their original dimensions.

Ques.20: Bitumen felt

1. is used as water proofing material
2. is used as damp proofing material
3. is made from bitumen and hessian fibres
4. all the above.

Ques.21 :In how many different ways can the letters of the word ‘CORPORATION’ be arranged so that the vowels always come together?

1. 810
2. 1440
3. m2880
4. 50400
5. 5760

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Ques.22: Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?

1. 4
2. 10
3. 15
4. 16

Ques.23:If 3(x – y) = 27 and 3(x + y) = 243, then x is equal to:

1. 0
2. 2
3. 4
4. 6

Ques.24:A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ?

1. 45
2. 60
3. 75
4. 90

Ques.25:The higher the wind speed and the longer the fetch or distance of open water across which the wind blows and waves travel, the ____ waves and the ____ energy they process.

1. larger, more
2. larger, less
3. smaller, more
4. smaller, less

Ques.26:What J. B. Dunlop invented?

1. Pneumatic rubber tire
2. Automobile wheel rim
3. Rubber boot
4. Model airplanes

Ques. 27: Number of moles of MnO4- required to oxidize one mole of ferrous oxalate completely in acidic medium will be

1. 2 moles
2. 6 moles
3. 4 moles
4. 5 moles

Ques. 28: Radiocarbon is produced in the atmosphere as a result of

1. collision between fast neutrons and nitrogen nuclei present in the atmosphere
2. action of ultraviolet light from the sun on atmospheric oxygen
3. action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
4. lightning discharge in atmosphere

Ques. 29: Nuclear sizes are expressed in a unit named

1. Fermi
2. angstrom
3. newton
4. tesla

Ques. 30: Lux is the SI unit of

1. intensity of illumination
2. luminous efficiency
3. luminous flux
4. luminous intensity

Ques. 31: Point A is at a lower electrical potential than point B. An electron between them on the line joining them will

1. move towards A
2. move towards B
3. move at right angles to the line joining A and B
4. remain at rest

Ques. 32: The high reactivity of fluorine is due to

1. its high electro negativity
2. small size of fluorine atom
3. availability of d-orbitals
4. strong F – F bond

Ques. 33: The iron ore magnetite consists of

1. Fe2O3
2. Fe3OH4
3. FeCO3
4. 3H2O

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Ques. 34: The main chemical constituent of clay is

1. silicon oxide
2. aluminium borosilicate
3. zeolites
4. aluminium silicate

Ques. 35: The main use of salt in the diet is to

1. make the taste of food better
2. produce in small amounts the hydrochloric acid required for the digestion of food
3. ease the process of cooking
4. increase the solubility of food particles in water

Ques. 36: 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?

1. 30%
2. 70%
3. 100%
4. 250%

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Ques. 37: A, B, C subscribes Rs. 50,000 for a business. A subscribes Rs. 4000 more than B and B Rs. 5000 more than C. Out of a total profit of Rs. 35,000, A receives:

1. 8400
2. 11,900
3. 13,600
4. 14,700

Ques. 38: The equation of parabola which passes through the intersection of a straight line x + y = 0 and the circle x2 + y2 + 4y = 0 is:

1. y2 = 4x
2. y2 = x
3. y2 = 2x
4. none of these

Ques. 39: Sin A. Sin B, Cos A are in GP, Roots of x2 + 2 x cot B + 1 = 0 are always:

1. real
2. imaginary
3. greater than 1
4. equal

Ques. 40: A transmission line has a characteristic impedance of 50 Ω and a resistance of 0.1Ω/m, if the line is distortion less, the attenuation constant (in Np/m) is

1. 500
2. 5
3. 014
4. 002

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