| Post Name | ASSISTANT ENGINEER - SR FOR PH |
|---|---|
| Department | KERALA WATER AUTHORITY |
| Question Paper Code | 083/2016/OL |
| Category Code | 382/2014 |
| Date of Test | 5 December 2016 |
| Medium of Question | ENGLISH |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
How many women members had attended on the occasion of the first Constituent Assembly in independent India ?
Answer
B. 15
2
Where was borrowed from the idea of Nominal head such as President, Cabinet system of Ministers, Post of Prime Minister, etc. ?
Answer
D. United Kingdom
3
Who was the Chairman of the Minorities' Sub Committee of the Constituent Assembly ?
Answer
D. H. C. Mukherjee
4
How many times Mahatma Gandhi visited in Kerala ?
Answer
A. 5
5
The book Pathompatham Noottandile Keralam is written by _____________
Answer
C. P. Bhaskaranunni
6
Who amongst the following writers has worked for women and tribals in Bengal ?
Answer
A. Mahasweta Devi
7
Which is the correct chronological order of the following leaders ? i) Sree Narayana Guru ii) Vaikunda Swamikal iii) Thykkadu Ayyavu iv) Chattambi Swamikal
Answer
B. ii, iii, iv, i
8
IMDB is an online database of information and ratings that related to __________
Answer
D. Film
9
Oozhiyam means
Answer
A. The forced labour service
10
Who was wrote the translated Malayalam novel Akbar in 1894 ?
Answer
C. Kerala Varma Valiyakoi Thampuran
11
When was All Kerala Grandhasala Sangham formed ?
Answer
A. 1945
12
Who is the author of Muhyadheen Mala which is twined to folk genre Mappila Pattukal ?
Answer
C. Qazi Muhammed Ibn Abdul Aziz
13
Chairperson of the 'Thiyya Yuvajana Sangham' at Pattanakkadu in 1934 was _________
Answer
D. E. Madhavan
14
What was the central focus of Rajiv Awas Yojana (RAY) ?
Answer
A. To help the slum dwellers
15
'Equal pay for equal work for both men and women' is referred in Indian Constitution of ___________
Answer
D. Directive Principles, Article 39(D)
16
'Kleptophobia' means
Answer
C. Fear of stealing
17
Which organization/mission belongs to Ramon Magsaysay Awardee, Bezwada Wilson ?
Answer
B. Safai Karmachari Andolan
18
Pusarla Venkata Sindhu's home town is _______________
Answer
B. Hyderabad
19
In which city Anne Frank write her famous diary ?
Answer
D. Amsterdam
20
Herself : Gender and Early Writings of Malayalee Women is written by ___________
Answer
C. J. Devika
21
A reversible heat engine receives 300 kJ from a heat source, delivers 100 kJ of work and rejects the balance heat to a sink. If the sink is at 30°C, determine the temperature of the heat source.
Answer
B. 181.55°C
22
For the same compression ratio
Answer
A. Thermal efficiency of Otto cycle is greater than that of Diesel cycle
23
In Aqua-Ammonia and Li-Br water absorption refrigeration systems, the refrigerants are respectively.
Answer
D. Ammonia and water
24
An apartment has a cooling load of 300 MJ/day. An air conditioner working 24 hours a day will have an approximate capacity of
Answer
C. 1TR
25
A pelton wheel is ideally suitable for
Answer
C. High head and low discharge
26
A fluid jet of cross sectional area A and velocity V and density ρ strikes a flat plate moving with a velocity u. The fluid mass striking it per second is
Answer
D. ρA(V−u)
27
The radial heat transfer rate through hollow cylinder increases as the ratio of outer radius to inner radius
Answer
A. Decreases
28
The unit of coefficient of convective heat transfer 'h' is expressed as
Answer
B. W/m²K
29
An increase in the percentage of carbon in steel results into decrease in its
Answer
D. Ductility
30
Dislocation in materials is a _________ defect.
Answer
B. Line
31
For transmission of maximum power the maximum tension in the belt should be
Answer
C. Three times the centrifugal tension
32
A worm gearing is used to obtain speed reduction between shafts whose axes are
Answer
A. Perpendicular and do not intersect
33
A 50mm diameter rod is to be turned on a lathe at a cutting speed of 30m/minute. The required spindle speed in rpm should be approximately.
Answer
D. 190
34
The angle between the face and flank of the single point cutting tool is known as
Answer
B. Clearance angle
35
The swaying couple in locomotives has maximum or minimum value when the angle of inclination of the crank with the line of stroke is:
Answer
B. 45°
36
At a particular rotational speed the unbalanced force due to revolving mass
Answer
D. is constant in magnitude but varies in direction
37
The static deflection of a shaft under a flywheel is 1 mm. What is the critical speed in rad/s if g = 10 m/s²?
Answer
A. 100
38
For a shaft fixed at one end and carrying a rotor at the free end, the nodal point will lie at:
Answer
C. the fixed end
39
For a small change of speed, if the displacement of the sleeve is high, then the governor
Answer
C. Sensitive
40
Dryness fraction is the ratio of
Answer
C. Mass of dry steam to the mass of dry steam and mass of water vapour in suspension
41
The function of a steam trap is
Answer
B. To drain off water resulting from partial condensation of steam pipes
42
For a thin cylinder subjected to internal pressure the ratio of circumferential and longitudinal stresses are in the ratio
Answer
A. 2 : 1
43
In a gas turbine the function of regenerator is
Answer
A. Heating the compressed air on its way to combustion chamber
44
The air screw of an airplane is rotating clockwise when looking from the front. If it makes a left turn the gyroscopic effect will be
Answer
B. Tend to raise the nose and depress the trail
45
For forced convection Nusselt number is a function of
Answer
D. Reynolds and Prandtl number
46
If the mean velocity of water is V, R is the hydraulic mean depth, and ρ and μ are the density and viscosity of water, then the Reynolds number (Rₑ) is defined as:
Answer
C. ρVR/μ
47
Find the area of rapid sand filters required for a town having a population of 80000 with an average rate of demand as 200 litres per head per day. Assume a rate of filtration as 5000 litres per hour per m² of filter area.
Answer
B. 200 m²
48
Two plates of 16 mm and 14 mm are joined by fillet. What should be the size of fillet weld to be used ?
Answer
A. 12.5
49
The relation between modulus of elasticity (E), modulus of rigidity (N), and bulk modulus (K) is given by:
Answer
D. E = 9KN/(3K + N)
50
Due to negative skin friction on a pile, the load carrying capacity of the pile
Answer
B. Decreases
51
Find the discharge through a rectangular channel of width 2 m, having a bed slope of 4 in 8000. The depth of flow is 1.5 m and take the value of N in Manning's formula as 0.012.
Answer
A. 3.98 m³/s
52
Most weather phenomena occur in the
Answer
D. Troposphere
53
The diameter of a rivet connecting plate of thickness 15 mm given by Unwin's formula is
Answer
C. 24 mm
54
Elongation produced in a bar of density ρ, length l and Young's modulus E due to its self-weight is:
Answer
A. 9.81ρl²/(2E)
55
N value for medium sand lies between
Answer
A. 10 to 30
56
Beams of uniform strength can be made by varying the cross-sectional dimension in such a way that:
Answer
B. M/z is constant
57
The minimum specific energy (Eₘᵢₙ) is related to critical depth (h꜀) for open channel flow as:
Answer
A. Eₘᵢₙ = (3/2)h꜀
58
The relation between porosity (n), specific yield (Sᵧ), and specific retention (Sᵣ) is correctly given by:
Answer
B. n = Sᵧ + Sᵣ
59
Initial setting time (T₁) and final setting time (T₂) for ordinary Portland cement are given by the relation:
Answer
C. T₂ = 90 + 1.2T₁
60
The temperature strain in a steel rod is ____________ proportional to the change in temperature.
Answer
A. Directly
61
In measuring horizontal angles, the error due to imperfect levelling of the plate bubble is
Answer
D. Large for steeply inclined sights
62
A cantilever 1.5 m long carries a uniformly distributed load over the entire length. Find the deflection at the free end if the slope at the free end is 1.5°.
Answer
C. 29.5 mm
63
The heights of water on the upstream and downstream side of a submerged weir of 3 m length are 20 cm and 10 cm respectively. If Cᵈ for free and drowned portions are 0.6 and 0.8 respectively, find the discharge over the weir.
Answer
D. 0.51 m³/s
64
Activated sludge is
Answer
A. Aerated sewage in the secondary tank containing aerobic microorganisms
65
The maximum area of tension reinforcement in a beam having cross-sectional area bd shall not exceed:
Answer
C. 0.04bd
66
A circular rod 0.2 m long tapers from 20 mm diameter at one end to 10 mm diameter at the other. On applying an axial pull of 6 kN, it was found to extend by 0.068 mm. Find the Young's modulus of the material of the rod.
Answer
D. 112 GN/m²
67
In establishing the line of sight which of the following statement is not correct ?
Answer
A. Eyepiece optical centre is needed
68
The equation of flexure is given as:
Answer
A. M/I = σ/y = E/R
69
A cut in the frame of a door to receive the shutter, is called
Answer
B. Rebate
70
Lap length in compression reinforcement should not be less than ____________ tiimes the diameter of the bar.
Answer
C. 24
71
Moment of inertia of a quadrant circle of radius R about its XX axis is given by:
Answer
B. 0.055 × R⁴
72
The point of contra-flexure is also called as
Answer
A. Point of inflexion
73
Pitot tube is used to measure
Answer
C. Velocity at a point
74
Between Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD).
Answer
B. COD should always measure higher than BOD
75
Queen closer may be placed
Answer
C. in header course next to first brick
76
Half-life for a general nth-order reaction is:
Answer
B. [(0.5¹⁻ⁿ − 1)/(k(n − 1))] Cₐ₀¹⁻ⁿ
77
After 8 minutes in a batch reactor, Cₐ₀ = 1 mol/l and conversion is 80%. After 18 minutes, the conversion is 90%. Then the rate equation is:
Answer
A. −rₐ = 0.5Cₐ²
78
Holding time and space time for flow reactors are related by
Answer
A. t̄ = τ/(1 + ε_A X_A)
79
A first-order reversible reaction A ⇌ rR is carried out in an ideal plug flow reactor. The design equation is given by; M = Cᵣ₀/Cₐ₀:
Answer
C. k₁τ = [(M + rXₐₑ)/(M + r)] [−(1 + εₐXₐₑ) ln(1 − Xₐ/Xₐₑ) − εₐXₐ]
80
The rate determining step of Michaelis Menten kinetics is
Answer
B. The complex dissociation step to produce product
81
The thermal conductivity is maximum for
Answer
A. Silver
82
A metal wire of 0.01 m diameter and thermal conductivity 200 W/(m·K) is exposed to a fluid stream with a convective heat-transfer coefficient 1000 W/(m²·K). The Biot number is:
Answer
D. 0.0125
83
The total heat loss by convection and radiation from an unlagged steam pipe of 50 mm outer diameter at 415 K to air at 290 K. Given ε = 0.90, h꜀ = 1.18(ΔT/Dₒ)⁰·²⁵ W/(m²·K), where h꜀ is the convective film coefficient.
Answer
B. 344.7 W/m length of pipe
84
A multiple effect evaporator as compared to a single effect evaporator of the same capacity has
Answer
C. Higher steam economy
85
The overall heat-transfer coefficient for a shell-and-tube heat exchanger for a clean surface is Uₒ = 400 W/(m²·K). The fouling factor after one year of operation is found to be hᵈₒ = 2000 W/(m²·K). The overall heat-transfer coefficient at this time is:
Answer
C. 333 W/(m²·K)
86
In a shell and tube heat exchanger, baffles are provided on the shell side to ``
Answer
D. All of the above
87
Fanning friction factor is defined as
Answer
B. τ_w/[ρv̄²/(2g_c)]
88
A continuous gravity decanter is used for separation of two immiscible liquids A and B of differing densities ρₐ and ρᵦ. If μ is the viscosity of the continuous phase, the separation time is given by:
Answer
C. t = 100μ/(ρₐ − ρᵦ)
89
If the suction pressure is only slightly greater than the vapor pressure
Answer
A. Some liquid may flash to vapor inside the pump
90
The pressure loss is maximum for
Answer
A. Orificemeter
91
Specific surface area by differential analysis is
Answer
B. A_w = (6λ/ρ_p) Σ(Δφ_n/D̄_{pn})
92
If F = feed rate of solids, `C_(u)` = under flow concentration, `C_(L)` = capacity limiting layer concentration, `V_(L)` = velocity of particles through the capacity limiting layer, area of a continuous thickener is
Answer
A. F/[V_L/(1/C_L − 1/C_U)]
93
The power required for a propeller mixer of diameter 25 cm for a liquid of specific gravity 1.4 and viscosity 2.5 cp for operating at a Reynolds number of 20,000 and power number is equal to 32 is given by
Answer
D. 8.16 W
94
The Henry's law constant for oxygen in water at 298 K is 4.4 × 10⁴ bar. For a partial pressure of oxygen at 0.25 bar and at 298 K, the solubility of oxygen in water is:
Answer
C. 5.68 × 10⁻⁶ moles/mole H₂O
95
A stream of nitrogen flowing at the rate of 7000 kg/h and a stream of hydrogen flowing at the rate of 1500 kg/h mix adiabatically in a steady-flow process. If the gases are ideal and are at the same temperature and pressure, the rate of entropy increase in kJ/(h·K) is:
Answer
A. −4675.3
96
The Lewis number is defined as:
Answer
C. Nₛ꜀/Nₚᵣ
97
If the feed is all saturated vapour, then q is given by
Answer
A. q = 0
98
A packed tower is designed to recover 98% CO₂ from a gas mixture containing 10% CO₂ and 90% air using water. Y = 14X can be used for equilibrium conditions where Y is kg CO₂/kg dry air and X is kg CO₂/kg water. The water-to-gas rate is kept 30% more than the minimum value. The height of the tower if HTU is 1 metre will be:
Answer
B. 11.3 m
99
For any particular duty and for all positive reaction orders
Answer
C. Mixed reactor is always larger than the plug flow reactor
100
For a gaseous reaction A + 2B → R, Cₐ₀ = Cᵦ₀ = 100 and Cᵦ = 20, the conversion of B is:
Answer
B. 0.889
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