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019/2023 - Pump Operator
You are currently taking the Pump Operator series. Good luck!
Question 1
How to exhibit the mandatory signs ?
Question 2
Which one is not suitable for lifting heavy load ?
Question 3
Sickness is a _______ type of hazard.
Question 4
In ‘ABC’ of first aid, ‘A’ stands for
Question 5
Which among the following is not a drill holding device ?
Question 6
One volume of liquid acetone can dissolve ________ volume of acetylene gas under normal atmospheric temperature and pressure.
Question 7
Bifurcated rivet is used
Question 8
Bottoming taps contain _____ rings on shank and the end of taps are champhered at an angle of _______ degree.
Question 9
Jenny caliper is also known as
i) Hermaphrodite
ii) leg and point caliper
iii) Odd leg caliper
i) Hermaphrodite
ii) leg and point caliper
iii) Odd leg caliper
Question 10
Which statement is suitable for smooth file ?
Question 11
In the case of a cold chisel, the angle between the top face of the cutting point, and normal to the work surface at the cutting edge is called
Question 12
The accuracy of try square is
Question 13
9 main scale divisions of a vernier caliper is divided into 10 equal parts in the vernier scale, find out 1 VSD of the same. (Consider 1 MSD = 1 mm)
Question 14
The datum line of an outside micrometer is stamped on
Question 15
Which among the following statement is not true ?
Question 16
Types of dial test indicators are
i) Plunger type dial test indicator
ii) lever type dial test indicator
iii) Washer type dial test indicator
Which among the following is correct ?
i) Plunger type dial test indicator
ii) lever type dial test indicator
iii) Washer type dial test indicator
Which among the following is correct ?
Question 17
The forward voltage, at which the current through the PN junction starts increasing rapidly is known as
i) Cut off voltage
ii) Knee voltage
iii) Peak reverse voltage
iv) Cut in voltage
i) Cut off voltage
ii) Knee voltage
iii) Peak reverse voltage
iv) Cut in voltage
Question 18
Which of the following is/are Pentavalent impurities ?
i) Antimony
ii) Boron
iii) Bismuth
i) Antimony
ii) Boron
iii) Bismuth
Question 19
Which of the following is/are the application of Zener diode ?
i) Amplifier
ii) Peak clipper
iii) Voltage regulator
iv) Full wave rectifier
i) Amplifier
ii) Peak clipper
iii) Voltage regulator
iv) Full wave rectifier
Question 20
Parameters which determine the performance of a JFET is/are
i) AC drain resistance
ii) Knee voltage
iii) Transconductance
i) AC drain resistance
ii) Knee voltage
iii) Transconductance
Question 21
In a linear resistor
i) Resistant value is constant
ii) V and I are directly proportional
iii) V and I are inversely proportional
iv) Resistance value not constant
i) Resistant value is constant
ii) V and I are directly proportional
iii) V and I are inversely proportional
iv) Resistance value not constant
Question 22
According to the Ohm’s law which of the statement is/are correct ?
i) I = V/R
ii) V = IR
iii) I = R/V
iv) R = VI
i) I = V/R
ii) V = IR
iii) I = R/V
iv) R = VI
Question 23
Current flowing through an open circuit is
i) Very high
ii) High
iii) No current flow
iv) Infinity
i) Very high
ii) High
iii) No current flow
iv) Infinity
Question 24
Function of yoke is/are
i) It provides mechanical support for the poles
ii) It carries the magnetic flux produced by the poles
iii) It carries electrical supply
iv) It provides over all protection of machine
i) It provides mechanical support for the poles
ii) It carries the magnetic flux produced by the poles
iii) It carries electrical supply
iv) It provides over all protection of machine
Question 25
Commutator used in a dC generator is/are
i) to facilitate collection of current from the armature conductor
ii) to carrying field winding
iii) convert AC induced in the armature conductors into unidirectional current
i) to facilitate collection of current from the armature conductor
ii) to carrying field winding
iii) convert AC induced in the armature conductors into unidirectional current
Question 26
Self excited DC generators are classified into
i) Shunt wound
ii) Series wound
iii) Compound wound
i) Shunt wound
ii) Series wound
iii) Compound wound
Question 27
Iron losses in a dC generator is/are
i) Hysteresis losses
ii) Windage losses
iii) Eddy current losses
iv) All the above (i, ii and iii)
i) Hysteresis losses
ii) Windage losses
iii) Eddy current losses
iv) All the above (i, ii and iii)
Question 28
Which of the following starter is/are used to control a DC motor ?
i) DOL starter
ii) Star delta starter
iii) 3-Point starter
iv) 4-Point starter
i) DOL starter
ii) Star delta starter
iii) 3-Point starter
iv) 4-Point starter
Question 29
The rotation of dC motor can be reversed by
i) Reversing both the field current and armature current
ii) Reversing field current or armature current
iii) Increasing field current
i) Reversing both the field current and armature current
ii) Reversing field current or armature current
iii) Increasing field current
Question 30
The working principle of a transformer is based on the
i) Faraday’s law of electromagnetic induction
ii) Thumb rule
iii) Fleming’s right hand rule
iv) Fleming’s left hand rule
i) Faraday’s law of electromagnetic induction
ii) Thumb rule
iii) Fleming’s right hand rule
iv) Fleming’s left hand rule
Question 31
A current carrying conductor placed in a magnetic field, it experiences a torque, this principle is related to
i) Working of a generator
ii) Working of a motor
iii) Working of a transformer
i) Working of a generator
ii) Working of a motor
iii) Working of a transformer
Question 32
Percentage of slip in an induction motor is
i) ((Ns – N) / Ns) x 100
ii) ((N – Ns) / Ns) x 100
iii) ((N – Ns) / N) x 100
i) ((Ns – N) / Ns) x 100
ii) ((N – Ns) / Ns) x 100
iii) ((N – Ns) / N) x 100
Question 33
Which of the following materials have small electrical resistivity ?
i) Bakelite
ii) Aluminum
iii) Quartz
iv) Copper
i) Bakelite
ii) Aluminum
iii) Quartz
iv) Copper
Question 34
Which of the following materials come into the group of semiconductors ?
i) Gold
ii) Silver
iii) Copper
iv) Silicon
i) Gold
ii) Silver
iii) Copper
iv) Silicon
Question 35
For the normal operation of a transistor
i) Emitter – Base junction is forward biased and Collector – Base junction is reverse biased
ii) Emitter – Base junction is reverse biased and Collector – Base junction is forward biased
iii) Emitter – Base junction and Collector – Base junction are forward biased
i) Emitter – Base junction is forward biased and Collector – Base junction is reverse biased
ii) Emitter – Base junction is reverse biased and Collector – Base junction is forward biased
iii) Emitter – Base junction and Collector – Base junction are forward biased
Question 36
An ideal transformer which has
i) No losses
ii) Winding losses
iii) Copper losses and Core losses
i) No losses
ii) Winding losses
iii) Copper losses and Core losses
Question 37
Main advantages of FET over BJT is/are
i) High input impedance
ii) Less noise level
iii) Low input impedance
iv) Considerable noise level
i) High input impedance
ii) Less noise level
iii) Low input impedance
iv) Considerable noise level
Question 38
BJT is a
i) Voltage control device
ii) Power controlled device
iii) Current controlled device
i) Voltage control device
ii) Power controlled device
iii) Current controlled device
Question 39
Most commonly methods used for fabrication of transistor is/are
i) Point contact
ii) Alloy junction
iii) Grown junction
i) Point contact
ii) Alloy junction
iii) Grown junction
Question 40
Which of the following is/are the terminals of a MOSFET ?
i) Source, Drain, Gate
ii) Collector, Emitter, Gate
iii) Source, Drain, Base
iv) Collector, Emitter, Base
i) Source, Drain, Gate
ii) Collector, Emitter, Gate
iii) Source, Drain, Base
iv) Collector, Emitter, Base
Question 41
Which of the following is/are come into the thyristor family ?
i) BJT
ii) Diode
iii) SCR
iv) FET
i) BJT
ii) Diode
iii) SCR
iv) FET
Question 42
Which switching device is/are known as double base diode ?
i) Transistor
ii) FET
iii) SCR
iv) UJT
i) Transistor
ii) FET
iii) SCR
iv) UJT
Question 43
Which of the following is/are an example of primary cell ?
i) Nickel-Cadmium cell
ii) Dry cell
iii) Lead acid cell
iv) Mercury cell
i) Nickel-Cadmium cell
ii) Dry cell
iii) Lead acid cell
iv) Mercury cell
Question 44
Capacitance of a capacitor depends upon
i) Area of plate
ii) Distance between the plates
iii) Types of dielectric
i) Area of plate
ii) Distance between the plates
iii) Types of dielectric
Question 45
The colour code for resistor 47 kΩ 5% tolerance is
i) Yellow, Violet, Red, Gold
ii) Yellow, Violet, Orange, Silver
iii) Yellow, Violet, Orange, Gold
iv) Yellow, Violet, Red, Silver
i) Yellow, Violet, Red, Gold
ii) Yellow, Violet, Orange, Silver
iii) Yellow, Violet, Orange, Gold
iv) Yellow, Violet, Red, Silver
Question 46
When two capacitors are connected in parallel total capacitance is
i) Decreased
ii) Equal to the capacitance of one capacitor
iii) Equal to the sum of the individual capacitor
iv) Product of two capacitor
i) Decreased
ii) Equal to the capacitance of one capacitor
iii) Equal to the sum of the individual capacitor
iv) Product of two capacitor
Question 47
SI unit of viscosity is
Question 48
Which part cleans compressed air by trapping solid particles and isolating liquids in the compressed air ?
Question 49
Pascal’s law states that the pressure or intensity of pressure at a point in a static fluid is ______ in all directions.
Question 50
Which part of double acting cylinder stops air leakage from cylinder to atmosphere ?
Question 51
Which valve block flow of liquid in one direction and permit free flow in the other direction ?
Question 52
Which pump is functioning similar to the external gear pump except that unlike gears do not directly make contact with each other ?
Question 53
Hydraulic actuator convert the pressure energy of fluid into _______ output to perform useful work.
Question 54
Directional control valve are classified according to the
Question 55
A hydraulic pump converts _________ into hydraulic energy.
Question 56
What is the use of directional control valve in hydraulic system ?
Question 57
What is the working cycle of compression ignition engine ?
Question 58
Which is the reason to decrease the volumetric efficiency of an engine ?
Question 59
The cross-sectional area of one cylinder of an engine multiplied by its stroke is called
Question 60
When does a fresh charge escapes from the petrol engine exhaust ?
Question 61
A ‘square engine’ is an engine having
Question 62
Which is used to determine the stroke of an engine ?
Question 63
The portion below the piston pin boss is called
Question 64
The minor diameter of a camground piston is
Question 65
A crankshaft is made off
Question 66
What is ovality of a bore ?
Question 67
Exhaust valve face angle is generally
Question 68
What type of bearing fitted in the connecting rod big end ?
Question 69
Exhaust valves are opened at a definite degree before BDC in engine valve timing. This is called
Question 70
Scavenging is done for the following purpose
Question 71
What is the effect if thermostat valve is stuck in closed position ?
Question 72
The boiling temperature of the coolant in the cooling system is increased by the use of
Question 73
Percentage of fuel energy lost to the cylinder walls in an automobile engine is approximately
Question 74
In which types of cooling system the rate of cooling is very low ?
Question 75
Engine overheating may result due to
Question 76
What is the cause of water leakage in water pump ?
Question 77
What is the reason if oil pump does not suck the oil ?
Question 78
The friction that occurs between the layers of oil in an oil film is called
Question 79
High oil pressure in a lubrication system is caused due to
Question 80
Which part is lubricated by splash lubrication system ?
Question 81
Which type of the emission control system that blow by gases are feed into the inlet manifold of a running engine ?
Question 82
Excessive oil consumption may be caused by all of these problems except
Question 83
In a Diesel fuel injection pump, the effective pressure strokes of the plungers are regulated by means of a
Question 84
Which action the spindle only move up and down in feed pump ?
Question 85
Cetane number of a diesel fuel is measure of
Question 86
Which governor has fitted the control rack with diaphragm ?
Question 87
The combustion process in a diesel cycle happens at
Question 88
What is the purpose of baffles in the fuel tank ?
Question 89
Which meter indicates the distance travelled by a vehicle ?
Question 90
Limp In mode is in
Question 91
What is the function of solenoid switch in starting system ?
Question 92
Which type of sensor used to monitor the injection timing and ignition timing of engine ?
Question 93
In an alternator the magnetic field is produced in the
Question 94
Which gas is filled in the sealed beam head lights ?
Question 95
Which sensor is used for monitoring the air-fuel ratio ?
Question 96
The vertical distance between the centre line of the centrifugal pump and the liquid surface in the pump is called as
Question 97
A centrifugal pump acts as a reverse of
Question 98
The fluid coming in the centrifugal pump is accelerating with the help of
Question 99
Which one of the following parts act as a flame arrester during engine back fire ?
Question 100
Which type of muffler produces anti noise without restricting exhaust flow ?