NON RETURN VALVE PUMP Kerala PSC Previous Question & Answers

476.

10.

11.

A refrigerator and a heat pump operate between the same temperature limits. The coefficient
of performance of the pump is 4, Then COP of the refrigerator will be

(@ 3 ¢) 4
L 9 (ಗ) 6
An adiabatic process is the one in which 4
(च) No heat gain or loss for the working substance
(b) The temperature of the working substance changes

9) The change in internal energy equals mechanical work done

(d) All of the above

A .... See more

477.

DEPUTY ENGINEER GENERAL AND SOCIETY CATEGORY KERALA CO OPERATIVE MILK MARKETING FEDERATION LTD

ടു

Maximum : 100 marks

Time : 1 hour and 15 minutes

1. Zeroth law of thermodynamics defines :

(ക) internal energy (18) temperature
(8 enthalpy (D) pressure
8. Otto cycle is also known as :

(A) constant temperature cycle

(B) constant temperature and pressure cycle
(0 ലേ
(D) constant pressure cycle

tant volume cycle

3. The Kinematic viscosity can be defined as the :
(ಗಿ) ratio of ab.... See more

478.

ASSISTANT ENGINEER CIVIL LOCAL SELF GOVERNMENT/PWD/IRRIGATION

10.

है

12,

18.

14.

16.

17.

What is defined as the ratio of volume of air voids to the total volume of 8011 mass and is
expressed as percentage?
(4) void ratio (B) porosity ) ‘
(C) percentage air voids (D) air content

What is the side slope of a Cipoletti weir?
(^) 1 horizontal to 2 vertical (8) 2 horizontal to 1 vertical
(C) 4 horizontal to 1 vertical (D) 1 horizontal to 4 vertical

How the .... See more

479.

LABORATORY TECHNICAL ASSISTANT MAINTENANCE AND REPAIRS OF AUTOMOBILES VHSE

10. Which of the following is used to avoid over cooling in the cooling system of the engine ?
(வி ‏ضرق سمي‎ (8) Thermostat
(ப Expansion reservoir (12) Radiator
11. Inwhich of the following lubrication system lubricant oil is mixed with fuel ?
(^) Splash system (18) Pressure system (C) Dry sump (13) Petroil system
12. Which is the following number is used to indicate ignition quality of diesel fuel ?
(ಗಿ) Cetane (98) Octane (C}) Random (D) None of thes.... See more

480.

LABORATORY TECHNICAL ASSISTANT MAINTENANCE AND REPAIRS OF TWO WHEELERS AND THREE WHEELERS VHSE

10.

11.

12.

13.

14.

15.

Diaphragm type mechanical fuel pump is driven by :
(ಯ) V-belt (B) வேண்ட
(ര) Camshaft eccentric (D) Cooling fan

1f the engine is continues to running after the ignition switch is turned off is called :

(ಗ) Dieseling (0) Percolation

(© Purging (D) Flooding
The component of battery coil ignition system which convert battery voltage into breakdown
voltage is calle.... See more

481.

CURATOR CUM DRAFTSMAN FOREST AND INDUSTRIES TRAVANCORE LTD

75.

76.

77.

78.

79.

80.

81.

82.

83.

The Eulers formula for columns is valid for :
{A) Large slenderness ratio (0) Zero slenderness ratio

(C) Small slenderness ratio (11) None of the above

In छ flange coupling, the flanges are coupled together by means 01;

(4) Studs (ए) Bolts and Nuts
(29 Nail (11) Rivets
Zeroth law of thermodynamics form the basis of —————— meas.... See more

482.

SENIOR MECHANIC HARBOUR ENGINEERING DEPARTMENT

16.

1T

18.

19.

20.

21.

22.

Which of the following is true when the rake angle of a cutting edge increases?
(മ) Tool strength reduces and chip flow resistance increases
(ए) Tool strength increases and smooth chip flow
(0) Tool strength reduces and chip flow resistance reduces

(D) Tool strength increases and chip flow resistance increases

Speed of air craft can be measured by
(ಗಿ) Tachometer (B.... See more

483.

JUNIOR INSTRUCTOR DRIVER CUM MECHANIC INDUSTRIAL TRAINING

27.

31.

32:

Diesel knock happens when :

(A) Ignition delay period increases (B) Ignition delay period decreases
(C) C.Ris high (D) None of these
Common fuel supply system in two-wheeler is :
(A) Pressure (B) Pump
(0 Gravity (D) Vaccum

Stoichiometric mixture of petrol engine at its ideal condition is :

(ക) 1 (B)
(©) 1 (7)

The drive for mechanical fuel pump is taken from :

(A) Cam shaft (B)

(C) .... See more

484.

TRADESMAN PLUMBING/HYDRAULICS TECHNICAL EDUCATION KTM/EKM/TSR/KNR

10.

11.

12.

18,

14.

16.

16.

17.

Which gas is used in gas welding?
(ക Oxy-nitrogen (B) Oxy-hydrogen

(0) Oxy-carbon (D) Oxy-acetylene

Water pump pliers are mostly used in :
(^) House plumping (B) Pump repair
(0 Wire cutting (D) Sheet cutting

For achieving self cleaning velocity 100 mm diameter drain pipes should have a slope of :
ക്ര 1:10 ന 1:40
(೧) 1:100 (D) 1:400
See more

485.

ASSISTANT ENGINEER SR FOR PH KERALA WATER AUTHORITY

A:t="(100mu)/(rho_{A)+rho_(B))*
B:-t =*(100mu)/(rho_(A}rho_(B})*
C:-t="(100mu)/{rho_(A}-rho_(B})
D:-t="100murho_{A)rho_(B)"
Correct Answer:- Option-C

Question89:-If the suction pressure is only slightly greater than the vapor pressure
A:-Some liquid may flash to vapor inside the pump
B:-There will be vaporization in the suction line
C:-No liguid can be drawn into the pump
D:-None of the above
Correct Answer:- Option-A

Question90:-The pressure.... See more

486.

ASSISTANT/AUDITOR GOVT SECRETARIAT/KPSC/KSAD ETC English/KANNADA

11.

12.

13.

14.

15,

16,

17,

18,

19,

20,

What day of the week will be on 8% June 2215 ?
(^) Friday (B) Thursday
(C) Monday (D) Sunday

What will come in the place of “?” :
EG, HI, KM, NP, ?

കഃ மஸ

© भ @) RS
17010 + 10 > 10 + 10 -10

കു? ® 10

(೧ 100 1

The simple interest on a sum of money is equal to the principal and num.... See more

487.

ASSISTANT/AUDITOR GOVT SECRETARIAT/KPSC/KSAD ETC :English/Tamil

11.

12.

13.

14.

15,

16,

17,

18,

19,

20,

What day of the week will be on 8% June 2215 ?
(ಯ) Friday (B) Thursday
(C) Monday (D) Sunday

What will come in the place of “?” :
EG, HJ, KM, NP, ?

(ಯ) Qs ദ യ

© 1 (D) RS
176 10-1-1010 10-10

കു? ൫ 10

(¢) 100 o 1

The simple interest on a sum of money is equal to the principal and n.... See more

488.

ASSISTANT/AUDITOR GOVT SECRETARIAT/KPSC/KSAD ETC English/Malayalam

489.

JUNIOR INSTRUCTOR MECHANIC DIESEL INDUSTRIAL TRAINING ENGLISH

97.

98.

99.

100.

In 8 diesel Fuel system filter is situated :
(A) between Fuel tank and Feed pump
(8) between FIP and Injector

(C) between Feed pump and FIP

(D) त of Fuel tank

Worn out main bearings cause :
(ಹ) Increase oil pressure (8) Decrease oil pressure
(ಲ) No change in oil pressure (D) जा leakage

Connecting rod small end bearing is usually :
(^) Shell bearing (8) Thrust bearing

(�.... See more

490.

DRILLING ASSISTANT GROUND WATER DEPARTMENT English

34.

35.

36.

87.

88.

89.

40.

41.

Rotary motion of the steering wheel is converted to a reciprocating motion by the:
{A) Trackrod {B) Track arm
0 Stub axle (2) Steering box

As applied to steering to abbreviation P.A.S stands for:
{A) Pump assisted system steering
{B) Pump aided steering
(€) Power activated system steering

(>) Power assisted steering

The steering ratio for manual.... See more

491.

JUNIOR INSTRUCTOR (PUMP OPERATOR) INDUSTRIAL TRAINING English

092,

093.

094,

095.

096.

097.

Power required to drive a centrifugal pump is proportional to
(ಯ) Speed (N) B) N?

(©) 1 (D) N*

Indicator diagram of reciprocating pump is a graph between
(A) Flow vs swept volume

(B) Pressure in cylinder vs swept volume

(C) Flow vs speed

(D) Pressure vs speed

Impulse turbine is used for

(ಯ) High head (8) Low head

(C) Medium head .... See more

492.

Junior Instructor (Mechanic Agriculture Machinery) Industrial Training Dept ENGLISH

93.

94,

95.

96.

97.

೨8,

೨9.

100,

A manually operated sprayer that is also used णि spraying in orchards and plantation

crops is
(ಹ) Knapsack sprayer (B) Hand compression
(C) Rocker sprayer (D) Allof these

The number of cutting blades in a manually operated flywheel type chaff cutter is
வ 4 ® 1
© 2 0) 3

The process of detaching grains from earheads is known as
(A) Re.... See more

493.

Technical Superintendent (Engineering) Kerala Co operative Milk Marketing Federation Limited

60,

61,

62,

68,

64,

65.

Identify the incorrect statement :

A flow nozzle
(^) has a contraction co-efficient of unity
(B) is less costly than a venturimeter
(C) is more efficient than an orifice meter

(D) has overall losers much smaller than in a venturimeter

A gas has a molecular weight of 44. The gas constant R for the gas, in (J/ Kg.K) :
(^) 189 (B) 0.045
(0 1854 യ 1180

An air plane .... See more

494.

Meter Reader - Kerala Water

073/21

53. A waterproof chemical is
A) Ceroplastic B) Solvent
C) Putty D) Plaster of paris

54. How to prevent algae growth in OH tank ?
A) By use of bleaching powder
B) By use of copper sulphate
C) By use of chlorine
)

D) By use of lime

55. Why traps are fitted in drainage system ?
A) To prevent waste water B) To prevent blocks

C) To avoid repairs D) To prevent foul gas

56. How many pipes are there in a one pipe sy.... See more

495.

Lineman-PWD (Electrical Wing)

55.

56.

57.

58.

59.

60.

61.

62.

Which of the following is suitable for starting squirrel cage induction motor?
(A) Rotor resistance starter (B) 4 point starter

(C) 3 point starter (D) Auto transformer starter

DIN rail is used to mount
(A) Push button switches (B) Circuit breakers
(C) Indicating lamps (D) Kit Kat fuses

Which of the following is not a method of synchronisation?
(A) Da.... See more

496.

Operator - Kerala Water Authority

51. What is the purpose of soldering on sheet metal joint ?
(^) To avoid bend (B) To avoid crack
(C) To avoid leak (D) To make strengthless

52. Which part in the internal gear pump act as seal ?
(^) Gears (B) Gasket
(C) Sealing ring (D) Cresent shaped spacer

53. Which rivet used in heavy structural work ?
(^) Pan head rivet (B) Snap head rivet

(C) Counter sunk rivet (D) Conical head rivet

54. Which washers are commonly used for structural f.... See more

497.

Refrigeration Mechanic - Apex Societies of Co-operative Sector in Kerala/ MATSYAFED

94. The axial flow fans are particularly suitable for handling :
(A) small volumes of air at relatively low pressures
(B) small volumes of air at relatively high pressures
(C) large volumes of air at relatively low pressures

(0) large volumes of air at relatively high pressures

95. Which control terminals are shorted before pump down operation in split package AC?
(^) Selector switch (B) Low pressure switch
(C) Dual pressure switch (D) High pressure switchSee more

498.

Motor Vehicle Inspector, Assistant Motor Vehicle Inspector

1. The viscosity of liquids decreases with increase in temperature due to
(A) Decreased cohesive forces
(B) Increased cohesive forces
(C) Decreased molecular momentum transfer
(D) Increased molecular momentum transfer

2. In Newtonian fluids, the shear stress is
(A) directly proportional to the viscosity
(B) inversely proportional to the viscosity
(C) directly proportional to the deformation rate
(D) directly proportional to the shear strain

3. Th.... See more

499.

University Engineer, Assistant Engineer (Civil) - Universities in Kerala, PWD, Irrigation etc

062/23

51.

52.

53.

54.

55.

56.

57.

58.

59.

60.

For a town with population 40,000, the average daily demand is 200 litres/capita/day
and five demand is 4000 litres/minute. The peak demand is

A) 27.36 Million litres/day B) 20.16 Million litres/day
C) 21.60 Million litres/day D) 37.92 Million litres/day
Rotary pumps are classified under

A) Impulse pumps B) Displacement pu.... See more

500.

Agricultural Officer - Kerala State Co-operative Agricultural and Rural Development Bank Ltd

90.

91.

92.

93.

94.

169/23

A pump set company follows ____ _
sophisticated pump set for large farmers.
A) Geographic segmentation B) Psychographic segmentation

segmentation while producing

C) Demographic segmentation D) None

Prof. Holden adopted an innovative method of spreading message of better quality
corn seeds in USA are popularly known as

A) Seed Corm Trains B) Seed Corn Trains

C).... See more

501.

Mechanic Grade-II -State Farming Corporation of Kerala Ltd

10.

11.

12.

13.

14.

15.

In an fluid flow if the force due to compressibility is negligible then the equations of motions
are called :

(^) Reynold’s equation of motion
(2) Navier- Stokes equation of motion
(0) Euler’s equation of motion

(D) Bernoulli’s equation of motion

A jet of liquid with relative density 0.8 strikes normally a flat plate with a velocity of 10 m/s.
The jet has an area of 0.04.... See more

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