RRB Technical Cadre (Allahabad) Exam 2014 Solved Paper (Part 2 of 6)

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Q.26:- The turbine suitable for low heads and high flow rates is ?

  1. Pelton Wheel
  2. Fracis
  3. Kelplan
  4. All of these

Ans:- (c) Keplan

Q.27:- The instrument used to measure external and internal diameter of shafts thickness of parts and depth of holes is ?

  1. Inside Micrometer
  2. Outside Micrometer
  3. Vernier Calipers
  4. Slip Gauge

Ans:- (c) Vernier Calipers

Q.28:- Processing time is least in  a ………… computer ?

  1. 16 bit
  2. 32 bit
  3. 8 bit
  4. 64 bit

Ans:- (d) 64 bit

Q.29:- Which number is similar to the numbers 13, 7 and 11 ?

  1. 9
  2. 17
  3. 12
  4. 15

Ans:- (b) 17

Q.30:- In human body which of the following is the largest in size ?

  1. Thyroid
  2. Liver
  3. Spleen
  4. Pancreas

Ans:- (b) Liver

Q.31:- Functional activities of a cell are controlled by ?

  1. Protoplasm
  2. Nucleolus
  3. Mitochondria
  4. Nucleus

Ans:- (b) Nucleolus

Q.32:- Find the last term in the given series

1, 8, 27, 64, 125, 216, 343, …….. ?

  1. 420
  2. 476
  3. 496
  4. 512

Ans:- (d) 512

Q.33:- In a perfectly elastic collision ?

  1. Linear momentum and K.E. both are conserved
  2. Only momentum is conserved
  3. Only K.E. is conserved
  4. None of them is conserved

Ans:- (a) Linear momentum and K.E. both are conserved

Q.34:- A body is thrown up with an initial velocity u and covers a maximum height of h then h is equal to ?

  1. u2/2g
  2. u/2g
  3. 2ug
  4. None of these

Ans:- (a) u2/2g

Q.35:- Centre of buoyancy always ?

  1. Coincides with the centre of gravity
  2. Coincides with the centroid of the volume of the fluid displaced
  3. Remains above the centre of gravity
  4. Remains below the centre of gravity
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Ans:- (b) Coincides with the centroid of the volume of the fluid displaced

Q.36:- Which set of two rivers form the world’s largest delta before their water flows into the respective seas ?

  1. Ganga-Brahmaputra
  2. Rhine-Seine
  3. Nile-Euphrates
  4. Danube-Thames

Ans:- (a) Ganga-Brahmaputra

Q.37:- The term RADAR stands for ?

  1. Radio direction and reflection
  2. Radio detection and ranging
  3. Radio waves dispatching and receiving
  4. Random dispatching and receiving

Ans:- (b) Radio detection and ranging

Q.38:- If M men can complete a job in H hours then in how many hours will 5 men complete this job ?

  1. MH/5
  2. 5H/M
  3. M/5H
  4. H/5

Ans:- (a) MH/5

Q.39:- Compression ratio of diesel engines normally have the range ?

  1. 8 to 10
  2. 10 to 15
  3. 16 to 20
  4. 80 to 90

Ans:- (a) 8 to 10

Q.40:- A transistor has an emitter current of 8 Ma and A of 0.99. Which of the following could be collector current ?

  1. 7.92 Ma
  2. 5.00 Ma
  3. 8.1 Ma
  4. 7.84 Ma

Ans:- (a) 7.92 Ma

Q.41:- In a safety fuse the temperature to which the wire gets heated is directly proportional to the ?

  1. Square of the current
  2. Fourth power of the current
  3. Cube of the current
  4. None of the above

Ans:- (c) Cube of the current

Q.42:- If the volume of voids is equal to the volume of solids in a soil mass then the values of porosity and voids ratio respectively are ?

  1. 1.0 and 0.0
  2. 0.0 and 1.0
  3. 0.5 and 1.0
  4. 1.0 and 0.5
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Ans:- (b) 0.0 and 1.0

Q.43:- Gypsum is a ?

  1. Mechanically formed sedimentary rock ?
  2. Igneous rock
  3. Chemically precipitated sedimentary rock
  4. Metamorphic rock

Ans:- (c) Chemically precipitated sedimentary rock

Q.44:- A satellite that revolves around the equator 36000 km from earth’s centre is called ?

  1. Polar
  2. Geostationary
  3. Equatorial
  4. Elliptical

Ans:- (b) Geostationary

Q.45:- A semi conductor Read Only Memory basically is ?

  1. A set of flip flop memory elements
  2. A combinational logic circuit
  3. A sequential circuit with flip flops and gates
  4. None of the above

Ans:- (b) A combinational logic circuit

Q.46:- The atomic number of an element is determined by ?

  1. The number of electrons in one atom
  2. The number of neutrons in one atom
  3. The valency of the element
  4. The number of protons in one atom

Ans:- (a) The number of electrons in one atom

Q.47:- Hard copy means ?

  1. Output on tape
  2. Output on Hard Disk
  3. Output on printer
  4. Details of Hardware

Ans:- (c) Output on printer

Q.48:- For thyristors pulse triggering is preferred to dc triggering because ?

  1. Gate dissipation is low
  2. Pulse system is simpler
  3. Triggering signal is required for short duration
  4. All of the above

Ans:- (d) All of the above

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Q.49:- 140 litres of acid contains 90% acid and rest water. The amount of water added to make the water 12.5% of the resulting mixture is ?

  1. 5 Litres
  2. 4 Litres
  3. 3 Litres
  4. 10 Litres

Ans:- (b) 4 Litres

Q.50:- By selling a shirt for Rs. 450 a man loses 25%. At what price will he sell the shirt in order to gain 50% ?

  1. Rs. 600
  2. Rs. 750
  3. Rs. 900
  4. Rs. 1000

Ans:- (c) Rs. 900