10.

11.

12.

13.

14.

15.

16.

17.

The change in electrical potential with the passage of pulse along the membrane of a muscle

cell or nerve cell :
(A)
(0)

Resting potential
Half cell potential

EKG stands for :
(A)
(0)

Electroencephalopathy

Electrocardiography

The wall of heart is made up of :
(A)
(0)

Epicardium
Endocardium

W.... See more

C:-Lever safety valve
D:-All of the above
Correct Answer:- Option-B

Question53:-A device, which is used to recover the waste heat of the flue gas for
heating feed water

A:-Super heater
B:-Air pre heater
C:-Economiser
D:-Evaporator
Correct Answer:- Option-C
Question54:-The function of an injector in a steam boiler is to
A:-Inject fuel at the furnace
B:-Deliver cold water to boiler against its own pressure
C:-Inject chemical solution in.... See more

079/21

25.

26.

27.

28.

29.

30.

31.

32.

Water hammer in pipes takes place when

A) Fluid flows with very high velocity

B) Fluid flows with very high pressure

C) Flowing fluid is suddenly brought to rest by closing a valve
D) Flowing fluid is gradually brought to rest by closing a valve

Which one is not a rotating machine ?
A) Gear pump B) Centrifugal pump
C) Jet pump D) .... See more

70.

71.

72.

73.

74,

76.

Which circuit the ballast resistor is used ?
(^) Horn circuit (B) Wiper circuit
(C) Flasher circuit (D) Headlamp circuit

Which of the following is true about the thermodynamic cycle of a diesel engine ?
(A) Constant volume cycle (B) Constant pressure cycle
(C) Atkinson cycle (D) None of these

What is the range of compression pressure of a typical petrol engine ?
(A) 9080 15051 (8) .... See more

Question32:-Ina 3/2 Directional control valve
‏قسن‎ represents number of positions and 2 represents number of ports
B:-3 represents number of ports and 2 represents number of positions
C3 represents the type of actuator and 2 represents number of positions
D-None of the above
Correct Answer: Option ®

Question33:-The compressed air has the advantage
‏معنم‎ be stored easily
ലട available anywhere
High speed operation
०-५॥ of the.... See more

Question32:-Ina 3/2 Directional control valve
‘Ac3 represents number of positions and 2 represents number of ports
B:-3 represents number of ports and 2 represents number of positions
೦-3 represents the type of actuator and 2 represents number of positions
D-None of the above
Correct Answer:- Option ®
Question33:-The compressed air has the advantage
‘AcCan be stored easily
Bs-Airis available anywhere
High speed operation
D-All of the above
Corre.... See more

74.

75.

76.

77.

78.

79.

80.

81.

82.

019/23

In which types of cooling system the rate of cooling is very low ?
A) Thermo siphon system

B) Air cooling system
C) Forced feed system
D) Pump circulation system

Engine overheating may result due to
A) Radiator pressure cap stuck closed
B) Excess coolant in the system

C) Thermostat stuck open

D) Broken fan bel.... See more

D:-Cam shaft
Correct Answer:- Option-B
Question19:-A dish in the piston head is employed to
A:-Decrease piston weight
B:-Provide valve clearance
C:-Adjust piston displacement
D:-Control compression ratio
Correct Answer:- Option-D
Question20:-Which tool is used for removing the piston rings from a piston?
A:-Piston ring expander
ston ring compressor
C:-Piston ring lifter
D:-Piston ring squeezer
Correct Answer:- Option-A
Question21:-Valve ove.... See more

49.

50.

51.

52.

53.

54.

55.

56.

Which pulley is used to increase the arc of contact, and also to produce a more tension in the
belts?

(A) Wooden pulley (B) Stepped pulley
(0 Jocky pulley (1) Fast and loose pulley

What is used to make a long shaft by joining the pieces of shaft?
(A) Bearing (B) Keys
(C) Couplings (D) Clutches

Which among the following converts mechanical energy in to.... See more

43.

44.

45.

46.

47.

48.

Write the Name of operation from the following statements :
= The tool with abrasives mounted on it is held on a spindle
= As the spindile rotates, a reciprocating motion is also given to the tool

_ Carried out for stock removal from metallic and non-metallic work pieces for achieving
super finish

(A) Scraping (B) Honing
(C) Frosting 0) Flaking

Write the name of lapping materi.... See more

049/2018 | g

94.

95.

96.

97.

98.

99.

100.

Ignition coil is used to
A) Step up voltage B) Step up current
©) Step up spark D) Step up power

In a diesel engine fuel injection pump, the effective pressure stroke of plungers are
regulated by means of a

A) Needle valve B) Control rack
C) Cam shaft D) Rotor

A hot spark plug has a

A) Long heat path

8) Short heat path
See more

55.

56.

57.

58.

59.

60.

61.

62.

63.

64.

019/23

A hydraulic pump converts into hydraulic energy.

A) Thermal energy B) Pneumatic energy
C) Electronic energy D) Mechanical energy
What is the use of directional control valve in hydraulic system ?

A) Open or close flow path B) Decrease the pressure
C) Control the valve D) Increase the pressure

What is the working c.... See more

074/23

37.

38.

39.

40.

41.

42.

43.

44.

Which of the following tap is used to start the thread while taping ?
A) Taper tap B) Bottoming tap
C) Plug tap D) Intermediate tap

What is the major cause (more than 90%) of failure in a hydraulic system ?
A) Leak of valve B) Pump
C) Tubing s in hydraulic system D) Contamination of hydraulic-fluid

Name the tool used for cutting external thread.... See more

Correct Answer:- Option-B

Question48:-Which of the following is correct regarding a stirling boiler?
1. In a stirling boiler steam drums and water drums are connected by steel tubes.
2. In a stirling boiler equalizers are used to equalise pressure in steam drums

A:-1 only

B:-2 only

C:-both are correct
D:-both are incorrect
Correct Answer:- Option-B

Question49:-Which of the following is correct regarding a steam locomotive?

೦.... See more

Correct Answer:- Option-A
Question57:-Retum on capital employed is also known as
A:-Return on investment
B:-Return on share holders fund
C:-Return on total asset
D:-Retum on fixed asset
Correct Answer:- Option-A
Question58:-A highly geared company exposes to
A:-Inflation risk
B:-Financial risk
C:-Business risk
D:-Internal rate risk
Correct Answer:- Option-B
Question59:-The cost of capital is not similar to one of the following
A:-Cut-off ra.... See more

35.

36.

37.

39.

40.

41,

42.

43,

The factor to be considered in design of hydrodynamic journal bearing is :
(५) specific pressure (8) rubbing speed
(C) viscosity of lubricant (D) all of the above

How many slip systems are present in an HCP crystal structure ?
(^) 3 (8) 6 60 12 (D) None of these

Which stainless steel is used in cryogenic vessels ?
‏ا‎ लिप्यत (8) AusteniticSee more

10.

11.

12

13.

14.

15.

16.

Excessive valve stem — guide clearance may cause :

(ಗಿ) Valve breakage
(0) Valve face wear

Exhaust valve face angle is generally :

(ക) 305
(©) 455

The inlet valve starts opening :

٤ھ )8(
٤ ‎Before‏ )0(

Aluminium alloy is used to make piston for :
(ക) Reduce piston expansion

(£) Reduce corrosion

Compres.... See more

41. Engine displacement is measured in
(^) Kilogram metre (8) Square metre
(C) Cubic centimetre (D) Pounds inch

42. Steering clutches are employed for which type of machinery ?
(^) Bulldozer (B) Excavator
(C) Two wheeled tractor (D) Four wheeled tractor

43, The lubricating oil pressure of engine is adjusted at
(2) Inpressure gauge (8) Main bearing clearance
(ಲ) By pass valve (D) Pressure relief valve

44, While making a compression test, the pu.... See more

A:-after 24 hours

B:-after 12 hours

C:-after 5 hours

D:-after 36 hours

Correct Answer:- Option-A
Question59:-Where are collar joints used

A:-smaller diameter C | pipe

B:-small diameter A C pipe

C:-small diameter S W pipe

D:-small diameter P V C pipe

Correct Answer:- Option-B
Question60:-Which is the place preferred to fix scour valve .....

A:-lowest point in pipe line

B:-higher point in pip.... See more

066/21

41. The sequence of working stroke takes place in a multi cylinder engine is called
A) Crank throw B) Cycle
C) Mean effective pressure D) Firing order

42. The cold starting device of a petrol engine is called
A) Choke B) Glow plug
C) Ignition coil D) Spark plug

43. Ina petrol engine speed ratio of engine cam shaft and distributor shaft is
A) 1:2 B) 1:4
C) 2:1 D) 1:1

44. Which type valves are used in air compressor ?
A) Reed v.... See more

A:-Fault with the oxygen sensors

B:-Fault with ignition coil

C:-Fault with spark plugs

D:-All of these

Correct Answer:- Option-D
Question30:-Balancing coil type oil pressure guage is

A:-Mechanical type

B:-Pneumatic type

C:-Electric type

D:-None of these

Correct Answer:- Option-C

Question31:-Rotating the engine crankshaft at minimum speed of 100 r.p.m. to
start the engine is called

A:-Cranki.... See more

A:-after 24 hours
B:-after 12 hours
C:-after 5 hours
D:-after 36 hours
Correct Answer:- Option-A
Question59:-Where are collar joints used .....
A:-smaller diameter C | pipe
-small diameter A C pipe
C:-small diameter S W pipe
D:-small diameter P V C pipe
Correct Answer:- Option-B
Question60:-Which is the place preferred to fix scour valve .....
A:-lowest point in pipe line
-higher point in pipe line
C:-straight line in pipe line
D:-none .... See more

35,

36,

37.

38,

39.

40.

41.

42,

43,

An opening in the side of a tank or vessel such that the liquid surface with the tank is below
the top edge of the opening is called :

(ಯ) ணன்‌ (B) Notch (ಲ) Orifice (D) Pipe flow

Reynolds number is the ratio of the inertia force to the :
(5) Surface tension force (8) Viscous force
(ಲ) Gravity force (D) Elastic force

Which of th.... See more

20,

21,

22,

23,

24,

25,

26,

27,

28,

29,

Kerala Kala Mandalam started in the year :
(ಹಿ) 1928 (B 1930 © 1932 (D) 1935

The rate of increase of pressure in liquid column towards vertically downward direction

must be equal to the of the fluid at that point.
(ಹಿ) Specific volume (B) Specific weight
(ಲ) Spedific gravity (D) None of the above

According to Pascals l.... See more

18.

13.

20.

21.

22.

23.

24.

25.

Which one of the following is a positive displacement pump ?
(A) Centrifugal pump (8) Volute pump
(C) Gear pump (D) Turbine pump

The pounds of water vapour carried by 1 pound of dry air under any given ടല of conditions
are called :

(A) Saturated air (9) Saturated humidity
(C} Relative humidity (>) THumidity

The solid is vigorously agitated by the .... See more

Question19:-The 'Al Amin' started publication from Calicut in October 1924 under the editorship വ്‌
A:-S.K.Pottekkat
B:-Vaikom Muhammed Basheer
C:-Vakkom Abdul Khadir Maulavi
D:-Muhammed Abdur Rahiman
Correct Answer:- Option-D
Question20:-Who was the first President of Nair Service Society
A:-Mannath Padmanabhan
B:-KKelappan
C:-K.Paramu Pillai
D:-Panangattu Keshava Panikkar
Correct Answer:- Option-B
Question21:-As per Indian Standards, only...... See more