| Post Name | Assistant Engineer |
|---|---|
| Department | Kerala Agro Machinery Corporation Ltd |
| Question Paper Code | 132/2022 |
| Category Code | 502/2019 |
| Date of Test | 28 December 2022 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Which one is a contribution by F. W. Taylor ?
Answer
A. Fair days task
2
Optimistic and pessimistic times of doing an activity are 1 hour and 5 hours
respectively. Variance of the activity is
Answer
B. 4/9
3
Moving average forecasting is a ________ method of forecasting.
Answer
C. Time series
4
If the fixed cost is Rs. 4,000, variable cost per unit item is Rs. 16 and selling price is
Rs. 21, then break even sales is
Answer
B. Rs. 16,800
5
Which one is an attribute ?
Answer
D. None
6
Surface hardness and fatigue life of steel alloys can be improved by
Answer
D. Carburizing
7
Transient creep is also known as
Answer
A. Primary creep
8
For a small number of very large castings, which pattern is best suitable ?
Answer
C. Skeleton pattern
9
While machining a brittle material, which of the following chips is most probable to
form ?
Answer
B. Discontinuous chip
10
Which of the following factors does not affect machinability ?
Answer
D. None of the above
11
An oil of specific gravity 0.9 has viscosity of 0.28 stokes at 38°C. What will be its
viscosity in N-s/m2 ?
Answer
C. 0.0252
12
If the number of jets in Pelton turbine is n, then the specific speed is
Answer
C. Proportional to n¹⁄²
13
In an open u-tube containing mercury, oil of specific gravity 0.9 is poured into one of
its limbs so that the length of the column of oil is about 50 cm. Then level of mercury
column in that limb is lowered approximately by how much ?
Answer
B. 1.6 cm
14
The volute casing of a centrifugal pump has which of the following functions ?
1. Eliminating loss of head due to change in velocity after exit from impeller
2. Directs the flow towards the delivery pipe
3. Converts a part of the velocity head to pressure head
4. Gives a constant velocity of flow
Select the correct answer using the codes given below :
Answer
B. 2 and 3 only
15
In a two dimensional incompressible steady flow, the velocity component u = Aeˣ is obtained. What is the other component of velocity?
Answer
C. v = −Aeˣy
16
A journal bearing has shaft diameter of 50 mm and a length of 50 mm. The shaft is
rotating at 25 rad/s and the viscosity of the lubricant is 25 mPas. The clearance is
0.025 mm. The shearing stress offered by the lubricant is approximately
Answer
A. 625 N/mm2
17
A steel rod 10 mm diameter and 1 m long is heated from 30 to 110 degree Celsius.
If Young’s modulus of the rod material is 200 GPa and coefficient of thermal expansion
is 12 × 10–6 per degree Celsius, the thermal stress developed is
Answer
Question Cancelled
18
At the point of contraflexure, the value of bending moment is
Answer
B. Zero
19
The radius of gyration for a circular column is
Answer
C. D/4
20
The tearing resistance of a plate in single riveted butt joint is 45 kN. The shearing and
the crushing resistances of the rivet are 20 kN and 35 kN respectively. If the strength
of the unriveted plate is 25 kN, the efficiency of the rivet joint could be
Answer
C. 0.8
21
Decreasing the evaporator pressure in a vapour compression refrigeration system
has the following effect :
i. Decreases refrigeration effect
ii. Increases refrigeration effect
iii. Decreases C.O.P.
iv. Increases C.O.P.
Which of these statements is/are correct ?
Answer
A. Only i and iii
22
The air standard efficiency of Otto cycle is greater than that of Diesel cycle when
both cycles have the same
Answer
B. Compression ratio and heat addition
23
For a fixed suction pressure and clearance volume, as the delivery pressure of a
reciprocating compressor increases, its volumetric efficiency
Answer
D. Decreases
24
For a 4-cylinder diesel engine, the following results were obtained when a Morse
test was conducted :
Brake Power with all cylinders firing = 30 kW
Brake Power with the 1st cylinder cut-off = 19.1 kW
Brake Power with the 2nd cylinder cut-off = 19.5 kW
Brake Power with the 3rd cylinder cut-off = 20 kW
Brake Power with the 4th cylinder cut-off = 19.8 kW
What is the mechanical efficiency of the engine ?
Answer
D. 72%
25
A furnace wall is made of 3 layers: an inner layer of 20 cm thickness and 0.2 W/(m·°C) thermal conductivity, a middle layer of 15 cm thickness and 1.5 W/(m·°C) thermal conductivity and an outer layer of thickness 30 cm and 3 W/(m·°C) thermal conductivity. If the inner and outer surface temperatures are 1060°C and 60°C respectively and the surface area is 1.2 m², the rate of heat transfer through the wall is
Answer
C. 1000 W
26
The first tractor demonstration was held at
Answer
A. Nebaraska
27
Thermal efficiency of diesel engine varies between
Answer
C. 32 to 38%
28
A tractor pulls a draft load of 1000 kg while travelling at a speed of 60 m/min. Find
the horse power (hp) developed by the tractor.
Answer
A. 13.33 hp
29
The function of differential lock is to develop full traction on
Answer
C. Both drive wheels equally
30
The alignment of centre line of knife section with the centre line of guard
Answer
C. Registration
31
The rear bottom of the landside is called as
Answer
A. Heel
32
___________ process converts vegetable oils to biodiesel.
Answer
B. Transterification
33
Plant protection operation (Spraying) in which total volume of liquid applied amounts
to less than 51/ha
Answer
C. Ultra low volume
34
The removal of soil from the land surface by the concentrated runoff to form small
channels
Answer
D. Rill erosion
35
The potential maximum retention is used in this empirical equation for finding peak
discharge from a watershed area
Answer
A. Curve number method
36
The imaginary line joining points of equal rainfall is called as
Answer
B. Isohyets
37
Void fraction of soil is termed as
Answer
B. Porosity
38
The time needed by water to flow from most remotest point of a watershed to the
outlet
Answer
C. Time of concentration
39
How many classes are there in land capability classification ?
Answer
D. 8
40
A structure used to measure overland flow and soil loss under controlled condition
in the field
Answer
B. Runoff plot
41
Maximum suction lift of a centrifugal pump in sea level is
Answer
D. None of these
42
___________ refers to the sensitivity of a remote sensor to variations in the reflectance
levels.
Answer
B. Radiometric resolution
43
One ton of refrigeration is equivalent to
Answer
C. 210 kJ/min
44
A sample of food material has moisture content of 7.5% (w.b.). The moisture content
on dry basis is
Answer
A. 8.1%
45
Answer
A. 10%
46
Which of the following equipment does not separate material on the basis of size ?
Answer
A. Spiral separator
47
According to which law, the energy required for size reduction is proportional to
change in surface area ?
Answer
B. Rittingers law
48
Falling rate drying occurs if
Answer
A. Initial moisture content is less than critical moisture content
49
The dimensionless number in mass transfer operations which is analogous to Nusselt
number in heat transfer is known as
Answer
B. Sherwood number
50
Freezing time is directly proportional to the __________ of the material being
dried.
Answer
B. Cube of the thickness
51
Use of tubular or box section of the frame improves the
Answer
D. Torsional strength of the frame
52
Rubber springs have good combination of shear and compression, then what is the
reason for not utilizing rubber springs in most of the passenger cars.
Answer
A. It is worst in tension since there is a tendency for the cracks to open out
53
In a recirculating ball steering, the use of small bearings between the worm and the
nut is
Answer
B. To reduce friction and steering effort
54
In an engine exhaust brake system coupled with service brake, what is the reason
for butter valve seizure ?
Answer
B. Lubrication would get burnt in the exhaust manifold and the carbon deposit
55
What is the approximate amount of force generated by system of levers for release
of clutch in the mechanism of a clutch ?
Answer
C. 180 N
56
Which of the following is true when a gear box is mounted in a vehicle ?
i. Gear box is fitted between the clutch and the rear axle
ii. To permit the engine to revolve at a relatively high speed while the wheels turn
at slower speeds
Answer
C. Both i and ii are true
57
Excessive wear pattern at the tread shoulders or the outer edges of a tyre is due to
Answer
D. All of the above
58
The lines, patterns, words except road signs which are applied or attached to the
carriageway or kerbs or to objects within or adjacent to the carriageway for controlling,
warning, guiding and informing the road users are called as
Answer
A. Road marking
59
Engineering in bus transport management involves the following
Answer
A. Breakdowns, Replacements, Docking, Overhauls and Stores
60
Influence of parking facility or lack of parking have its major effect on which of the
following ?
i. Parking impacts land use, specially institutional and commercial activities in the
zone.
ii. It influences prevailing landscape, environment and architectural experiences
over time in the area.
iii. It influences urban development and redevelopment in business districts .
iv. Parking, especially on-street parking, adds to traffic congestion and
consequential accidents and pollution in the area.
Answer
D. All of the above
61
Ignition delay quality of the diesel fuels generally measured in terms of
Answer
B. Cetane number
62
The specific gravity of the electrolyte in a battery can be checked with
Answer
D. Hydro meter
63
The optimal spark timing of petrol engine is on
Answer
D. 35°BTDC
64
The combined current and voltage vibrating regulator consist of
Answer
D. All of the above
65
The wattage (Power) of the indicator bulb is normally
Answer
B. 21 W
66
Which of the following is not affecting the SI engine knocking or detonation ?
Answer
D. Calorific value of the fuel
67
In the compression ignition engine, the ignition delay is increased by
Answer
A. Advancing the injection angle
68
What is the general formula and molecular arrangement for Paraffin ?
Answer
C. CnH2n+2 and Chain
69
In roots blower type supercharger, the blower is runs at ________ times of the engine
speed.
Answer
B. 1.50
70
The temperature of the 70 kg rigid body is identified as 392°F. Find the temperature
of the body in degree Celsius (°
Answer
B. 200°C
71
Lateral deflection of vehicle body damage often results from
Answer
A. A hit from an angle
72
Drum brakes are more affected by wet and heat than disc brakes because
Answer
C. Both water and heat are trapped inside the drum
73
When vehicle is moving off from rest, a torque converter
Answer
A. Can double the applied torque
74
If the vehicle is misfiring as well, this may indicate that
Answer
C. Both injection and ignition timing faults
75
Big end bearings are lubricated
Answer
C. By oil that is fed to them through oil ways in the crankshaft
76
A single phase transformer when supplied from 240 V, 50 Hz has an eddy current
loss of 100 W. If supply is changed to 360 V, 50 Hz, the new eddy current loss in
the transformer would be
Answer
D. 225 W
77
The per unit impedance of a circuit element is j0.12. If the base MVA and base kV
are halved, then the new value of the per unit impedance of the circuit element
will be
Answer
C. j0.24
78
For a transistor connected in CE configuration, it is given that I_B = 100 μA, I_CO = 10 μA and α = 0.98. The value of collector current I_C of the transistor will be:
Answer
A. 5.4 mA
79
A single phase load draws 6A at 230 V for 5 hours. The watt meter connected in the
circuit makes 2000 revolutions in this time. The watt meter constant is 500 rev/kWh.
The power factor of load is
Answer
C. 0.5797
80
The octal equivalent of the HEX number DC.BA is
Answer
A. 334.564
81
A dc shunt generator delivers 195 A at 250 V. The resistance of the shunt field and
armature winding are 50 � and 0.05 � respectively. The induced emf in the generator
will be
Answer
C. 260 V
82
When single conductors are replaced with bundled conductors, the effective
inductance and capacitance of transmission line will respectively
Answer
C. decrease and increase
83
In a common emitter amplifier circuit, the un-bypassed emitter resistance provides
Answer
B. negative voltage feedback
84
The Thevenin equivalent of a dc network is a voltage source of 100 V in series with
a resistance of 100 k�. In order keep the error in voltage measurement across its
terminals below 1%, the voltage measuring device should have a resistance of
Answer
A. at least 10 M�
85
In machine tool drive application, the speed of a separately excited DC motor is to be controlled both below and above rated speed. Which method is best suited?
Answer
C. Both I_f and V_a variable with I_f ≤ I_f,rated
86
If the speed of a DC machine increases with increase in load torque, then it is a
Answer
C. differentially compounded motor
87
The insulation of modern EHV lines is designed based on
Answer
B. the switching surges
88
Two logic inputs A and B are available whereas their complements A and B are
not available. What is the minimum number of two input NAND gates required to
implement A � B ?
Answer
A. 5
89
A 1 mA ammeter has a resistance of 100 �. The value of shunt resistance required
to convert it into an ammeter to measure 1 A is
Answer
C. 0.1001 �
90
A single phase AC voltage regulator is feeding a load of (4 + j4)�. The control range
of firing angle is
Answer
A. 45° < � < 180°
91
If a three phase slip ring induction motor is fed from the rotor side with stator winding
short circuited, then frequency of the current flowing in the stator winding will be
Answer
D. Slip frequency
92
The main criterion for selection of the size of a distribution feeder on a radial distribution
system is
Answer
D. Voltage drop in the conductor
93
If a differential amplifier has a CMRR of 80 dB and common mode gain 4, then its
differential gain will be
Answer
C. 40,000
94
A CRO screen has 10 divisions on the horizontal scale. If a voltage of
10 sin(314 t + 60°) is observed on the CRO with a line base setting of 5 ms / div.,
the no. of cycles of the voltage signal displayed on the screen will be
Answer
A. 2.5 cycles
95
A single phase voltage source square wave inverter feeds a purely inductive load.
The wave form of the load current will be
Answer
B. Triangular
96
A cylindrical rotor synchronous motor is energized with its field winding shorted, then
it will
Answer
D. Start and run as an induction motor
97
Two identical alternators each rated for 100 MVA, 11 kV, having sub-transient
reactance of 10% are working in parallel. The short circuit level at the bus bars is
Answer
A. 2000 MVA
98
A counter made up of 10 flip flops is initially at ‘0’. What will be the count after 2050
pulses.
Answer
B. 000 000 0010
99
An analog voltmeter uses external multiplier settings. With a multiplier setting of
20 k�, it reads 440 V and with a multiplier setting of 80 k�, it reads 352 V. What will
be the voltmeter reading if the multiplier setting is 60 k� ?
Answer
A. 377 V
100
A chopper feeding a resistive load has an input voltage VS and duty cycle . For
this chopper, rms value of the output voltage is
Answer
C. � VS
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