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**Bihar Polytechnic Question Paper 2017**

**Bihar Polytechnic Question Paper 2017** is available for the aspirants who are preparing for the DCECE Bihar Polytechnic entrance exam 2017. The **Bihar Polytechnic Previous Year papers & Bihar Polytechnic Question Paper last 5 years** are providing here in the Pdf format. The organization is going to conduct Bihar Polytechnic entrance exam 2017 on 10th June to 11th June 2017 so there is no more time is left for preparation. The applicants who are going to appear in the upcoming examination test of **DCECE polytechnic Bihar 2017** can easily download all the Bihar Polytechnic Question Paper/sample papers/old papers/model papers and all other study material easily thorough our page @**projobshub.com**

**DCECE Previous Year Papers 2017 **

The **DCECE Bihar Polytechnic Question Paper** will give you the idea about the **upcoming Bihar Polytechnic Entrance Exam 2017 **and you can prepare very well with help of these Bihar Polytechnic Question Paper as well as it will summarize your study material you can prepare only those subjects which mostly comes in the examination. So now the candidates For preparing any exam

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**Bihar Polytechnic DCECE Exam 2017 **

Name of the organization |
Bihar Combined Entrance Competitive Examination Board |

Name of Exam | Diploma Certificate Entrance Competitive Examination |

Category | Bihar Polytechnic Question Paper |

Status | Available |

Issue of Online Admit Card | 12 May 2017 |

Date of exam – PE and PPE | 10 Jun 2017 |

Date of exam – PM and PMD | 11 Jun 2017 |

**Bihar Polytechnic Model Papers 2017**

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*Bihar Polytechnic Syllabus 2017 Exam pattern***for preparing your examination.**

*How to Prepare For English*&*Mathematics*&*GK& Latest Current Affairs***Bihar DCECE Previous**** Year Question Sample Papers**

Which is correct for inside charged sphere?

- E ≠ 0, V = 0
- E=0, V= 0
- E≠0, V≠0
- E=0, V = 0
- D

The magnetic force experienced charge q in magnetic field moving with velocity V, will maximum when the angle between V and B is:

- 00
- 450
- 900
- 1800
- C

In closed organ pipe the produced harmonics are:

- no harmonics is produced
- even and odd both
- odd only
- even only
- C

A metal surface emitted electrons of 3 eV, when a light of 4 eV are made to incident on the same metal surface the energy of the emitted photons will be :

- 3 eV
- 4 eV
- 5 eV
- 2 eV
- C

Forbidden energy gap in Ge is :

- 75 eV
- 5 eV
- 1 eV
- 5 eV
- A

The work done in increasing the size of a bubble by 10-2 m2:

- 4 x 10-4 erg
- 50 x 102 erg
- 25 x 102 erg
- 25 x 10-2 erg
- B

A boy is revolving on a dice with spreading hands. Suddenly the boy brings his near his body, the change in the system will be :

- angular velocity increases
- angular velocity decreases
- angular velocity unchanged
- angular momentum decreases
- A

A body moving with 50 m/sec. Velocity collides elastically with another body at rest. After the collision the velocity of first body changes to 30 m/sec., the velocity of the second body will be:

- 30 m/sec.
- 60 m/sec.
- 80 m/sec.
- 50 m/sec.
- C

Two dice are thrown together then the probability that the sum of numbers appearing on the dice is 7 :

- 1 /6
- 1 /12
- 5 /36
- None of these
- A

Sam purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one of them at the rate of Rs. 33. What was his percentage profit?

- 5
- 5
- 6
- 5
- C

When a plot is sold for Rs. 18,700, the owner loses 15%. At what price must that plot be sold in order to gain 15%?

- 21,000
- 22,500
- 25,300
- 25,800
- C

The H.C.F. of two numbers is 23 and the other two factors of their L.C.M. are 13 and 14. The larger of the two numbers is:

- 276
- 299
- 322
- 345
- C

The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:

- 9000
- 9400
- 9600
- 9800
- C

If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is:

- 50 km
- 56 km
- 70 km
- 80 km
- A

It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the cars is:

- 2 : 3
- 3 : 2
- 3 : 4
- 4 : 3
- C

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

- 0
- 1
- 10
- 19
- Ans: D

Radiocarbon is produced in the atmosphere as a result of

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

Sound waves in air are

- transverse
- longitudinal
- electromagnetic
- polarised
- B

Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

- 14 m/s
- 140 m/s
- 4 km/s
- 14 m/s
- D

Suitable impurities are added to a semiconductor depending on its use. This is done in order to

- increase its life
- enable it to withstand higher voltages
- increase its electrical conductivity
- increase its electrical resistivity
- C

Moment of inertia is

- vector
- scalar
- phasor
- tensor
- D

Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

- Water, iron and air
- Iron, air and water
- Air, water and iron
- Iron, water and air
- C

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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 :

- 6
- 4
- 5
- 3
- Ans-) 3

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
- Ans-) 4x-3y+2=0

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

- 1/6
- 1/3
- 2/3
- 3/4
- Ans-) 1/3

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

- 290
- 490
- 590
- none of these
- Ans-) 590

Function of a grid in a triode is :

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

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

- 1: 1
- 2: 1
- 1: 3
- 3: 1
- Ans-) 1: 1

Of which the velocity is equal to light velocity:

- Cathode ray
- X-rays
- positive ray
- all
- Ans-) X-rays

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
- Ans-) unchanged

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

- Time period
- velocity
- frequency
- amplitude
- Ans-) velocity

The momentum correction factor (β) for the viscous flow through a circular pipe is

- a) 1.25

- b) 1.33
- c) 1.50
- d) 1.66
- e) 2.00
- Ans-) B

A piezometer opening in pipes measures

- velocity head
- static pressure
- total pressure
- negative static pressure.
- Ans-)B

An independent mass of a fluid does not posses

- elevation energy
- kinetic energy
- pressure energy
- none of these.
- Ans-) C

A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is

- less than 12.2 m of the water
- more than 12.2 m of the water
- equal of 12.2 m of water
- none of these.
- Ans-) B

Hydrostatic pressure on a dam depends upon its

- length
- depth
- shape
- material
- both (b) and (c)
- Ans-) E

When two layers of a fluid separated by dy move over the other with a difference of velocity dv, causes a shearing stress , where μ is known as

- coefficient of viscosity
- absolute viscosity
- dynamic viscosity
- viscosity
- all the above.
- Ans-) E

A pipe of 0.1 m2 cross sectional area suddenly enlarges to 0.3 m2 cross-sectional area. If the discharge of the pipe is 0.3 m3 /sec, the head loss is

- 2/g m of water
- g/2 m of water
- 1g m of water
- g m of water.
- Ans-) A

Maximum efficiency of transmission of power through a pipe, is

- 25%
- 3%
- 50%
- 67%.
- Ans-) D

An ideal flow of a liquid obeys

- Continuity equation
- Newton’s law of viscosity
- Newton’s second law of motion
- dynamic viscosity law,
- Ans-) A

Reynold number is the ratio of initial force and

- viscosity
- elasticity
- gravitational force
- Surface tension.
- Ans-) A

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