## Interview MCQ Set 1

1. Interference is caused by?

a) Overlapping of tooth profiles

b) Large size of dedendum

c) Meshing of involute and no-involute profiles

d) All of the mentioned

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2. Interference can be removed by under cutting.

a) True

b) False

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3. Interference is maximum when the largest pinion is in mesh with the smallest gear.

a) True

b) False

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4. Undercutting is consider healthy for the tooth as it eliminates undercutting.

a) True

b) False

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5. Backlash is defined as

a) Difference in the width of tooth space and engaging tooth thickness

b) Amount by which engaging tooth thickness exceeds the tooth space

c) Other name for interference

d) None of the listed

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6. The amount of backlash depends on

a) Diameteral pitch

b) Module

c) Centre distance

d) All of the mentioned

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7. The two teeth have thickness t₁ and t₂. If backlash of t₁ is greater than that of t₂, than

a) t₁ > t₂

b) t₁ < t₂

c) t₁ = t₂

d) None of the mentioned

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8. Answer the following questions with respect to the following questions

A gear train consist of spur gear as shown. Gear A receives 4kW of power at 750rpm through its shaft and rotates in CW direction.

8. Calculate the torque on the gear A.

a) 51N-m

b) 48N-m

c) 46N-m

d) 44N-m

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9. Calculate the torque on the gear B.

a) 47N-m

b) 51N-m

c) 0

d) Infinity

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10. A gear train consist of spur gear as shown. Gear A receives 4kW of power at 750rpm through its shaft and rotates in CW direction. Calculate the torque on the gear C if number of teeth on gear A, B and C are 40, 70 and 30.

a) 66N-m

b) 68N-m

c) 53N-m

d) 45N-m

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11. Calculate the tangential gear tooth force. Module of the gear is 5mm.

a) 510N

b) 526N

c) 544N

d) None of the listed

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A planetary gear train is shown in the figure. Number of teeth on the sun gear A, planet gear B and fixed ring gear D are given by 30, 70 and 140 respectively. Module is taken as 5mm

12. Calculate the length of the arm C.

a) Missing data

b) 250mm

c) 330mm

d) 240mm

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13. Calculate the tangential component of gear tooth force.

a) 220.6N

b) 303.2N

c) 454.7N

d) 633.2N

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14. A pair of spur gears consist of 25 teeth pinion meshing with a 115 teeth gear. The module is 5mm. Calculate the gear ratio.

a) 5

b) 4.6

c) 5.2

d) 4

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15. Calculate the shaft angle for opposite hand of helix if helix angle of two gears are 20⁰ and 17⁰.

a) 17⁰

b) 20⁰

c) 37⁰

d) 3⁰

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## Interview MCQ Set 2

1. If f(x)=x^{7}+x^{5}+x^{4}+x^{3}+x+1 and g(x)=x^{3}+x+1, find f(x) x g(x).

a) x^{12}+x^{5}+x^{3}+x^{2}+x+1

b) x^{10}+x^{4}+1

c) x^{10}+x^{4}+x+1

d) x^{7}+x^{5}+x+1

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2. If f(x)=x^{7}+x^{5}+x^{4}+x^{3}+x+1 and g(x)=x^{3}+x+1, find the quotient of f(x) / g(x).

a) x^{4}+x^{3}+1

b) x^{4}+1

c) x^{5}+x^{3}+x+1

d) x^{3}+x^{2}

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3. Primitive Polynomial is also called a ____

i) Perfect Polynomial

ii) Prime Polynomial

iii) Irreducible Polynomial

iv) Imperfect Polynomial

a) ii) and iii)

b) only iii)

c) iv) and ii)

d) None

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4. Which of the following are irreducible polynomials?

i) X^{4}+X^{3}

ii) 1

iii) X^{2}+1

iv) X^{4}+X+1

a) i) and ii)

b) only iv)

c) ii) iii) and iv)

d) All of the options

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5. The polynomial f(x)=x^{3}+x+1 is a reducible.

a) True

b) False

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^{3}+x+1 is irreducible.

6. Find the HCF/GCD of x^{6}+x^{5}+x^{4}+x^{3}+x^{2}+x+1 and x^{4}+x^{2}+x+1.

a) x^{4}+x^{3}+x^{2}+1

b) x^{3}+x^{2}+1

c) x^{2}+1

d) x^{3}+x^{2}+1

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^{3}+x

^{2}+1.

7. On multiplying (x^{5} + x^{2} + x) by (x^{7} + x^{4} + x^{3} + x^{2} + x) in GF(28) with irreducible polynomial (x^{8} + x^{4} + x^{3} + x + 1) we get

a) x^{12}+x^{7}+x^{2}

b) x^{5}+x^{3}+x^{3}

c) x^{5}+x^{3}+x^{2}+x

d) x^{5}+x^{3}+x^{2}+x+1

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^{12}+ x

^{7}+ x

^{2}) mod (x

^{8}+ x

^{4}+ x

^{3}+ x + 1). Reducing this via modular division gives us, (x

^{5}+x

^{3}+x

^{2}+x+1)

8. On multiplying (x^{6}+x^{4}+x^{2}+x+1) by (x^{7}+x+1) in GF(2^{8}) with irreducible polynomial (x^{8} + x^{4} + x^{3} + x + 1) we get

a) x^{7}+x^{6}+ x^{3}+x^{2}+1

b) x^{6}+x^{5}+ x^{2}+x+1

c) x^{7}+x^{6}+1

d) x^{7}+x^{6}+x+1

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^{7}+x

^{6}+1.

9. Find the inverse of (x^{2} + 1) modulo (x^{4} + x + 1).

a) x^{4}+ x^{3}+x+1

b) x^{3}+x+1

c) x^{3}+ x^{2}+x

d) x^{2}+x

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10. Find the inverse of (x^{5}) modulo (x^{8}+x^{4} +x^{3}+ x + 1).

a) x^{5}+ x^{4}+ x^{3}+x+1

b) x^{5}+ x^{4}+ x^{3}

c) x^{5}+ x^{4}+ x^{3}+1

d) x^{4}+ x^{3}+x+1

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^{8}+x

^{4}+x

^{3}+ x + 1) we get x

^{5}+ x

^{4}+ x

^{3}+1 as the inverse.

## Interview MCQ Set 3

1. The ball mill can be best used for which kind of feed?

a) Wet and Dry

b) Coarse and Fine

c) Rocks and Bricks

d) Any kind of feed

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2. What is the ratio of length to diameter of tube mill?

a) 4:1

b) 3

c) Both 3 and 4:1

d) 1:2

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3. Which of the following forces act on the tumbling mill?

a) Tangential force

b) Centrifugal force

c) Circular force

d) Gravitational force

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4. Which of the following is true, when operating speed is less than critical speed?

a) No grinding

b) Effective grinding

c) Best grinding

d) Bold grinding

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5. What is the angle of nip for ball mill?

a) 4π^{2}n^{2} (R-d)/g

b) 4π^{2}n^{2} (R+d)/g

c) 4π^{2}n^{2} (R-r)/g

d) 4π^{2}n^{2} (R-n)/g

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^{2}n

^{2}(R-r)/g, Where n is the speed of the rotation of the ball mill.

6. At critical speed, α = 0 and cos α = 1, what is critical speed?

a) n = nc

b) 2π = nc

c) g = nc

d) gn= nc

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7. What does the below equation represent?

a) Natural speed

b) Full speed

c) Optimum speed

d) Critical speed

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8. What is percentage of tumbling mill speed?

a) 80 to 100%

b) 65 to 80%

c) 50 to 90%

d) 10 to 50%

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9. Which of the following uses shearing action?

a) Buhrstone mill

b) Tumbling mill

c) Rod mill

d) Ball mill

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10. What is the feed size for a buhrstone mill?

a) Size of peat

b) Size of rock

c) Size of grain

d) Any size

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## Interview MCQ Set 4

1. Activation value is associated with?

a) potential at synapses

b) cell membrane potential

c) all of the mentioned

d) none of the mentioned

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2. In activation dynamics is output function bounded?

a) yes

b) no

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3. What’s the actual reason behind the boundedness of the output function in activation dynamics?

a) limited neural fluid

b) limited fan in capacity of inputs

c) both limited neural fluid & fan in capacity

d) none of the mentioned

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4. What is noise saturation dilemma?

a) at saturation state neuron will stop working, while biologically it’s not feasible

b) how can a neuron with limited operating range be made sensitive to nearly unlimited range of inputs

c) can be either way

d) none of the mentioned

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5. Broadly how many kinds of stability can be defined in neural networks?

a) 1

b) 3

c) 2

d) 4

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6. What is structural stability?

a) when both synaptic & activation dynamics are simultaneously used & are in equilibrium

b) when only synaptic dynamics in equilibrium

c) when only synaptic dynamics in equilibrium

d) none of the mentioned

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7. What is global stability?

a) when both synaptic & activation dynamics are simultaneously used & are in equilibrium

b) when only synaptic & activation dynamics are used

c) when only synaptic dynamics in equilibrium

d) none of the mentioned

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8. Which models belongs to main subcategory of activation models?

a) additive & subtractive activation models

b) additive & shunting activation models

c) subtractive & shunting activation models

d) all of the mentioned

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9.What is the assumption of perkels model, if f(x) is the output function in additive activation model?

a) f(x)=x

b) f(x)=x^{2}

c) f(x)=x^{3}

d) none of the mentioned

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10. Who proposed the shunting activation model?

a) rosenblatt

b) hopfield

c) perkel

d) grossberg

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11. What was the goal of shunting activation model?

a) to make system dynamic

b) to keep operating range of activation value to a specified range

c) to make system static

d) can be either for dynamic or static, depending on inputs

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## Interview MCQ Set 5

1. Which of the following are the example of Municipal and industrial discharge pipes

a) nonpoint sources of pollution

b) violations of the Clean Water Act

c) point sources of pollution

d) irrigation

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2. The presence of high coliform counts in water indicate

a) contamination by human wastes

b) phosphorus contamination

c) decreased biological oxygen demand

d) hydrocarbon contamination

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3. How the biological oxygen demand gets affected with the increased presence of organic matter in water?

a) the oxygen demand increases

b) the oxygen demand decreases

c) the oxygen demand remains unchanged

d) none of the mentioned

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4. Which of the following is a major source of groundwater contamination?

a) agricultural products

b) landfills

c) septic tanks

d) all of the mentioned

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5. Which of the following is considered as part of water use planning?

a) waste water treatment

b) water diversion projects

c) storm sewer drainage

d) all of the mentioned

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6. The stage in which the biological processes are used to purify water in a wastewater treatment plants is called

a) secondary sewage treatment

b) primary sewage treatment

c) wastewater reduction

d) biochemical reduction

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7. Groundwater mining in coastal areas can result into

a) increase in the salinity of groundwater

b) decrease in the toxicity of groundwater

c) decrease in the salinity of groundwater

d) increase in the water table

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8. Which of the following is not an important characteristic of the Green Revolution?

a) mechanized agriculture

b) hybrid seeds

c) slash and burn

d) monoculture

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9. The three primary soil macronutrients are

a) carbon, oxygen and water

b) copper, cadmium and carbon

c) potassium, phosphorus and nitrogen

d) boron, zinc and manganese

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10. Which of the following are negative effects on the soil and water due to conventional, mechanized farming practices?

a) soil compaction

b) reduction in soil organic matter

c) soil erosion

d) all of the mentioned