Marine Electro Technology (MET) E-Pariksha online exam previous asked question for MEO class 4 exam

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• Set 1 - Marine Electro Technology
• Set 2 - Marine Electro Technology
• Set 3 - Marine Electro Technology
• Set 4 - Marine Electro Technology
• Set 5 - Marine Electro Technology
• Set 6 - Marine Electro Technology
• Set 7 - Marine Electro Technology
• Set 8 - Marine Electro Technology
• Set 9 - Marine Electro Technology
• Set 10 - Marine Electro Technology
• Numericals - Marine Electro Technology
• Fill in the blanks  - Marine Electro Technology

Fill in the blanks in MET EPariksha

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1. Open-loop transfer function of a system having one zero with positive real values is called _______ phase function

2. In a Control Loop System, having Zero(0) Positive Real Values are called ____________.

3. Resistance of a wire is increased if the Length is____  and Area is _____.
ANS - INCREASED, DECREASED

4. The type of the system whose transfer function is given by
   G(S) =(s2+3)/(s5+s4+s3+3s2+2s) is:

5. A semiconductor is damaged by a strong current, because of (1)________ (2)________ (3)________

6. Permanent damage to semi conductor due to overcurrent may be caused due to ______ _______ _______

7. For a given line voltage, four heating coils will produce maximum heat when connected in__________

8. WHAT IS VALUE OF Vgs WHEN Id EQUALS ZERO
ANS - PINCH OFF VOLTAGE

Set 10 - Marine electro technology multiple choice question from e-pariksha for meo class 4

1.A poly-phase motor driving an engine room pump fails to start. When trying to identify the cause of failure, which of the following steps are applicable?
A.Visually examine motor for open circuit faults.
B.Visually examine starter for open circuit faults.
C.Reverse the direction of electrical supply to check if it works.
D.Perform the infinite resistance test.
 ANS A, B, D

2.When paralleling an AC generator with live bus bars, which of the following precautions are applicable?
A.Generator frequency should be slightly lower than bus bar frequency
B.Generator frequency should be slightly higher than bus bar frequency
C.Generator voltage should be in phase with bus bar voltage
D.Generator voltage should be out of phase with bus bar voltage
ANS B, C

3.With reference to a Data Logger for a refrigeration system, which of the following parameters should be monitored?
A.Room temperature.
B.Liquid Line temperature.
C.Recharge temperature.
D.Solenoid valve operation.
ANS A, B, D

4.With reference to a Data Logger for a refrigeration system, which of the following parameters should be monitored?
A.Sea water temperature and pressure.
B.Condensing temperature
C.Refrigerant leakage
D.Evaporating temperature
ANS A, C

5.Which of the listed precautions should be taken when cleaning the internals of a motor with compressed air?
A.Open the machine on both ends so as to allow the air and dust to escape.
B.Be certain that the circuit breaker is opened and tagged on the feeder panel.
C.Be certain that the air is clean and as dry as possible.
D.Ensure that the fuse in the motor is removed.
ANS A, B, C

6.The current in a semiconductor is produced by:
A.Electrons
B.Neutrons
C.Protons
D.Holes
ANS A, D

7.In a Transistor
A.PNP and NPN are two basic types
B.Emitter,Collector and Base are the basic Elements.
C.Collector separates Base and Emitter
D.Emitter separates Base and Collector
ANS A, B

8.Purpose of preferential trip to prevent
A.blackout
B.to avoid overload
C.to start heavy machinery
D.all
ANS A, B

9.To prevent electric shock during electric arc welding
A.Wear dry clothes
B.Wear insulated shoes
C.Keep first aid equipment ready
D.None of the above
ANS A, B

Numericals of Marine Electro Technology asked in E pariksha online exam

WE REQUEST THE READERS TO ANSWER THE NUMERICALS IN THE COMMENT COLUMN GIVEN BELOW SO THAT THE ANSWER WILL BE AVAILABLE TO ALL CANDIDATES APPEARING FOR THE EXAM. MOREOVER THESE ANSWERS WILL BE AVAILABLE AT ALL THE TIME.

 1) A certain appliance uses 750 W. If it is allowed to run continuously for 15 days, how many kilowatt-hours of energy does it consume?

ANS 750*15*60/1000 

2) What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 

ANS 75*4 

3) If it takes 35 J of energy to move a charge of 6 C from one point to another, what is the voltage between the two points? Your answer should be correct to two decimals. 

4) Calculate the Velocity of the conductor (up to 0 decimal places), if terminal voltage is 2.2 V/m and the magnetic field strength is 0.2 T. . 

5) Calculate the frequency of the motor ( up to 0 decimal places), if the speed if 4800 Rpm and number of Poles is 2. 

ANS 120*F/P 

6) If the resistance of any coil is 120 Ohm. Calculate the Resistance (up to 0 decimal places), when its Length is increased by 20% and its Diameter is increased by 50%. 

ANS RESISTANCE = RHO*LENGTH/CROSS SECTIONAL AREA 

7) What is the power in a Resistor in Milli Watts (up to 0 decimal places), having Resistance of 12 Ohm having a Potential Difference of 3 V. 

ANS POWER=VOLTAGE*VOLTAGE/RESISTANCE (ANS*1000 TO CONVERT TO MILLIWATTS) 

8) what happens to the amount of energy stored in the electromagnetic feild when the current thro an inductor is cut in half.. 9) electrons and protons of the same momentum enter normally into a uniform magnetic field of flux density B. mass of the electron is me (m suffix e) and mass of the proton is mp (m suffix p).if re (r suffix e) and rp (r suffix p) represents the radii of the path of the electrons and the protons respectively. calculate the ratio re/rp. your answer should be correct to 2 decimals..

Set 9 - MET online questions for marine engineer MEO class4 exam

1. A semiconductor that decreases in resistance with an increase in temperature is known as a __________.
resistor
thermistor
diode
thermopile

2. In a diesel electric plant, raising the generator's field excitation will cause the DC propulsion motor to __________.
increase in speed
decrease in speed
affect generator speed only
affect main motor speed if done in conjunction with higher generator engine speeds

3. Which of the following statements best describes the material known as varnished cambric?
Felted asbestos sealed with varnish.
Cotton cloth coated with insulating varnish.
Rubber insulation coated with a layer of tin.
Paper impregnated with mineral oil, specially wrapped with nonmetallic tape, and coated with varnish.

4. A synchronous motor maintains synchronism with the rotating field because _____________.
field strength varies directly with rotors Slip
DC current applied to the rotor coils causes the rotor magnets to lock in with the rotating flux of the stator
the stator poles are dragged around due to the flux created by the excitation current
the stator flux rotates in the opposite direction

5. A low voltage protection circuit is used in electric motor starting equipment
Trip circuit contractor when the motor overspeed due to low voltage
Trip circuit contractor when the motor develops short circuit due to low voltage
Allows the motor to restart automatically on restoration of voltage without manual resetting
prevent motor from restarting automatically

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Set 8 - Chocolate questions of Marine Electro Technology, Class 4 E Pariksha

1. The opposition to the magnetic lines of force in magnetic field is called
choose one Resistance Reluctance Impedence Inductance

2. PN Diode advantage over a Vacuum Diode
choose one longer life no warm up time less delicate all the above

3. Time delayed or delayed action-type fuses are designed to _____________.
choose one prevent grounds in branch circuits prevent opens in motor circuits permit momentary overloads without melting guard lighting and electronic circuits

4. Silicon diodes designed for a specific reverse breakdown voltage, become useful as an electronic power supply voltage regulator, called _____________.
choose one tunnel diodes hot-carrier diodes compensating diodes Zener diodes

5. The part of a fuse that melts and opens the circuit is made of _____________.
choose one Copper and antimony Steel and Babbitt Aluminum or beryllium alloy Zinc or an alloy of tin and lead

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Set 7 - Marine Electro Technology previous asked online questions for MEO class 4 exam

1. Which of the following physical character does around rotor induction motor posses that squirrel cage motor does not
choose one Slip Rings End Rings Centrifugal Clutch End Plates

2. Which of the following conditions will occur when solenoid coil burns out of a cargo winch with a electrical brake.
choose one The brake will be set by spring force. The motor will overspeed and burns out The load suspended by the cargo boom will fail Nothing will happen, the winch will continue to operate normally

3. which of the following capacitor is having highest di electric constant
choose one AirGap Glass Paper Polyster

4. If an intrinsic semiconductor is doped with a very small amount of boron then the extrinsic semiconductor set formed ,the no. of electrons and holes will
choose one both dec increase and decrease Both increase Decrease and increase

5. determine the order of doping in transistor (from high to low)
choose one collector ,base, emitter Emitter,collector,base Base, emitter,collector collector ,base, emitter

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Set 6 - MEO Class IV online questions for Marine Electro Technology for Engineers

1. Calculate avg value of 12v peak sine wave over one complete cycle?
choose one Zero 12v 6v 3v

2. which of the capacity has dielectric constant of 1.0000
choose one Airgap Vaccuum Electrolyte water

3. When testing a capacitor with an analog type ohmmeter, a good capacitor will be indicated when __________.
choose one there is no meter deflection the meter deflects to a low resistance value and remains the meter deflects to a low resistance value and slowly increases towards infinity the meter deflects to a low resistance value and increases rapidly to a higher value,

4. the appereant power in inductive circuit
choose one True power Lead Inductive Reactive

5. getting the value of a/c sign wave from ammeter and voltmeter is
choose one RMS Peak Avg Full Wave

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Set 5 - Marine Electro Technology E Pariksha online questions

1. When reading electrical motor controller diagrams, it helps to know that ____________.
paths in the control circuit are drawn as heavy lines and in the power circuit as lighter lines
current paths in the power circuit are drawn as heavy lines and in control circuit as lighter lines
circuits subject to 500 volts or greater are drawn as heavy lines and below 500 volts as lighter lines
circuits subject to 500 volts or greater are drawn as light lines and below 500 volts as heavy

2. .Where a thermal-acting breaker is required to be used in an area of unusually high, low, or constantly fluctuating temperatures, an ambient compensating element must be used. This element consists of a
Cylindrical spring on the contact arm.
Conical spring on the contact arm.
Second bimetal element
Second electromagnet

3. Which of the following precautions should you take when securing propulsion generators and motors for an extended period of time?
Disconnect the brush pigtails from their contacts and circulate air through the units.
Disconnect the brush pigtails from their contacts and discharge carbon dioxide into the units to keep them dry.
Lift the brushes from commutator collector rings and use the built-in heater to prevent moisture accumulation.
brushes from commutator collector rings and circulate cool dry air through the units.

4. Which of the listed precautions should be taken when cleaning the internals of a motor with compressed air?
the machine on both ends so as to allow the air and dust to escape.
Be certain that the circuit breaker is opened and tagged on the feeder panel.
Be certain that the air is clean and as dry as possible
All of the above

5. 52When testing a capacitor with an analog type ohmmeter, a good capacitor will be indicated when __________.
there is no meter deflection
the meter deflects to a low resistance value and remains there
Insulation varnish flaking.meter deflects to a low resistance value and slowly increases towards infinity
the meter deflects to a low resistance value and increases rapidly to a higher value, but stays fairly low

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Set 4 - Online Multiple choice questions for Electricity for MEO class 4

1. Large cable sizes are formed as individual conductors that may be comprised of several smaller strands to __________.
choose one obtain the flexibility required for easy handling reduce the overall weight of the wire run reduce the number of supports all of the above

2. Which of the following is having Di-Electric Constant 80?
choose one Air Water Caster Oil Mica

3. Where a thermal-acting breaker is required to be used in an area of unusually high, low, or constantly fluctuating temperatures, an ambient compensating element must be used. This element consists of a ______________.
choose one cylindrical spring on the contact arm conical spring on the contact arm second bimetal element second electromagnet

4. The direction of magnetic flux changes when the direction of current is reversed.
choose one True False Dont Know Dont Know

5. In a P-Type Semiconductor, the majority current Carriers are ___________.
choose one Holes Electrons Protons All of the above

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