MEMU CAR SHED/ RAJAHMUNDRY/ BZA DIVISION/SCR
MEMU/EMU TECH III LDCE PRACTICE PAPERS
1. EACH QUESTION ATTEMPT ONCE ONLY
2.TOTAL EXAMINATION TIME 90MIN.ONLY
3. RESULTS SHOW AT END OF THE EXAM
2.TOTAL EXAMINATION TIME 90MIN.ONLY
3. RESULTS SHOW AT END OF THE EXAM
- Total time required to get complete notches from shunt to full power
- 09-12 sec
- 06-11sec
- 05-10 sec
- 010-15sec
- Notches will not come if _____is not turned ON
- CR
- OL
- BIV
- HL Switch
- If traction motor No. 4 is grounded, which of the following Relay will act ?
- OL 3&4
- EFRA-II
- OL 1&2
- EFRP
- If any one of the main rectifier fuse is blown?
- SR will not pick up
- Only indication will come
- ABB will trip
- TELE
- Auxiliary Compressor is a
- DC Motor
- Single phase AC motor
- 3phase AC motor
- None of these
- Conservator is a part of
- Traction Motor
- VCB
- Transformer
- Main Compressor
- MCBs will not trip if
- HOBA in OFF
- Flasher switch on
- AWS ON
- HL Switch on
- When earth fault in OVR (Relay) VCB will trip through
- HEFRP
- OVR
- OLP
- EFRP
- LTR relay is provided in
- Power Circuit
- Control Circuit
- Auxiliary II Circuit
- Auxiliary-1 Circuit
- Voltage rating of Auxiliary circuit-I is
- 266V
- 110V
- 372V
- 141V
- In case of earth faults in lights , which relay will act
- EFRP
- EFRA I
- OLP
- EFRA II
- Setting of OL5 & OL6 in EMU is
- 4000A
- 3000A
- 5000A
- 7000A
- SR not picking up with MSTWL, problem is
- Tap changing contactor
not closing - Motor Contactor not
closing - SR relay I/L bad contact
- Control switch defective
- Tap changing contactor
KF-1 is a- Radiator cooling fan motor
- Contactor
- Changing over switch
- Rectifier cooling fan motor
- Function of main rectifier is
- To convert DC to AC
- To convert AC to DC
- To convert DC to variable
DC - To convert 3 Phase AC to
DC
- Total No. of auxiliary motors in a motor coach is
- 6
- 5
- 3
- 4
- Voltage rating of 4601 type traction motor in EMU/MEMU is
- 456 V
- 535V
- 675 V
- 782V
- Color of good silica gel is
- White
- Blue
- Red
- Yellow
- Purpose of Auxiliary Rectifier is
- A To feed TM
- To feed Aux. compressor
- To feed Main compressor
- To fed control circuit
- VCB will trip for the following relay
- TTR
- RFAR
- CBAR
- BIR
- Which of the following is a air flow relay
- ARR
- RFR
- RFAR
- TTR
- When TTR acts __________lamp will glow
- ABB
- UFL
- CHBA OFF
- MSTWL
- CC1 is used for operating
- AUX.compressor
- Main compressor
- Rectifier fan
- Traction Motors
- Location of EAS is
- Roof
- HT room
- Cab
- LI room
- CHBA output voltage is
- 110V AC
- 141V
- 266V
- 110V DC
- Fans work with voltage
- 110V AC
- 110V DC
- 141 V AC
- 266V AC
- voltage of Aux-II circuit is
- 141v
- 266v
- 110v
- 230v
- Location of OL-1 and 2 Relay is at
- Tap changer
- Relay panel
- Switch group I
- Switch group II
- Relay to detect abnornalities in transformer
- EFRA II
- RFAR
- BIR
- OL 1 and 2
- main circuit breaker used in EMU or MEMU is
- ABCB
- SF-6
- VCB
- OCB
- location of SL is in
- HT room
- LT room
- Choke tank
- Cab
- pick up voltage of OVR is
- 140V
- 540V
- 230V
- 840V
- setting temperature of TTR is at
- 150'C
- 75'C
- 200'C
- 35'C
- to operate "OL RESET"______ switch should be off
- ABB
- CONTROL
- EP
- HEFRP
- safety relays are
- TTR,CBAR
- TTR,RFAR
- CBAR,NVR
- BIR,OLP
- Rating of twin beam head light is
- 24V,70/75W
- 110 V,70/75W
- 24V,100/90W
- 110V,90/100W
- input/output voltage of DC-DC converter is
- 110V/110V
- 110V/100V
- 110V/24V
- 110V/32V
- SR relay is
- EM type
- EP type
- latching type
- elctronic type
- total number of natches in EMU/MEMU is
- 11
- 22
- 20
- none of these
- number of jumpers in MEMU
- 5
- 4
- 10
- 5 and 4
- electrolyte used in lead acid battery's is
- Conc.sulphuric acid
- diluted sulphuric acid
- nitric acid
- hydrochloric acid
- the rating of HRC fuse for control circuit is
- 50 A
- 32A
- 63 A
- 10 A
- the ampere hour capacity of MEMU LMLA battery is
- 90 AH
- 75 AH
- 95 AH
- 70 AH
- ARR is
- air reset relay
- VCB reset relay
- ABB reaet relay
- air release relay
- CBAR is
- current balancing Auxiliry relay
- current balancing air relay
- current breaking Auxiliry relay
- current breaking air relay
- which of the following is not a safety relay
- AFL RELAY
- HEAD LIGHT
- FLASHER LIGHT
- SPOT LIGHT
- Rating of OLP relay is
- 100A
- 100V
- 160 A
- 160 V
- when earth faults occurs in auxiliry compressor_____ will trip
- VCB
- EFRA II
- MCB
- EFRP
- Battery used in EMU/MEMU is
- Ni-Cd cell
- Lead acid cell
- dry cell
- Edison cell
- purpose of QFL relay is to
- make flasher light to ON
- to avoid flasher light to work during initial charging
- to suppress flasher light
- to by - pass flasher light
- DMH is a part of
- Brake controller
- Master controller
- BL box
- Guard brake
- Breather is a part of
- Transformer
- Traction Motor
- VCB
- Main Compressor
- Silica gel is used
- To lubricate servo motor
piston - To cool Transformer oil
- To absorb moisture
- To Lubricate Bearing
of TM
- To lubricate servo motor
- CBAR will trip only when
- One bridge fuse blown
- Two bridge fuse blown
- For both a &b
- D Rectifier Fan not working
- To operate EAS, which of the following key is required
- No key is required
- Reverser Key
- BL Key
- BIV Key
- Tap changer contactor auxiliary interlock Gap is
- 2mm-4mm
- 1.4mm-2.2mm
- 2.4mm- 3.2mm
- 1.4mm-2.2mm
- Condition for packing Starting Relay (SR) by crew is
- Can be packed only
up to shunt power - can be packed only on
Emergency - should not be packed
- can be packed up to half
power
- Can be packed only
- pick up voltage of LTR is
- 70 V
- 100 V
- 110 V
- 120 V
- Buckhholz relay is to protect
- Transformer
- Traction motor
- Main Rectifier
- MCP
- PRV is to protect
- Rectifier
- Transformer
- TM
- Main Compressor
- Test done on the transformer oil to know incipient faults in transformer
- DPT
- PPT
- BDV
- DGA
- Size of cable used in control circuit is
- 3 sq.mm
- 10sq.mm
- 25 sq.mm
- 50 sq.mm
- In MEMU the setting of ABB Governor Cut in/cut out is
- 4.3/3.3 kg/cm.sq
- 6.0/7.0 kg/cm.sq
- 8.0/9.0 kg/cm.sq
- 4.0/5.0 kg/cm.sq
- Current collected from OHE through
- VCB
- Transformer
- Pantograph
- D Rectifier
- Transformer Oil is cooled by
- Rectifier Motor
- Radiator Motor
- MCP
- Oil Pump Motor
- Rating of HRC fuses in fan circuit
- 63 Amps
- 100 Amps
- 32 Amps
- 16 Amps
- Total battery voltage in MEMU
- 80 V
- 90 V
- 100 V
- 110 V
- No. of bridges in EMU Rectifier
- 3
- 2
- 6
- 4
- DC series motor is used for traction purpose because
- Low starting torque
- High starting torque
- High speed
- Constant torque at all speeds
- Rating of MEMU transformer is
- 1000 KVA
- 800 KVA
- 1100 KVA
- A 1200 KVA
- CP LP safety valve setting is
- 3.5 kg/ cm. square
- 6 kg/ cm. square
- 5 kg/ cm. square
- 8 kg/ cm. square
- Air dryer safety valve setting is
- 8.5 kg/cm.square
- 8.0 kg/cm.square
- 7.5 kg/cm.square
- 9.5 kg/cm.square
- What is the Torque spanner setting of 4601 Traction Motor compole bolt?
- A 40-42KG.m
- 25-27KG.m
- 32-36KG.m
- 24-27KG.m
- What is the Torque spanner setting of 4303BY Traction Motor compole bolt?
- 22-26KG.m
- 30-32KG.m
- 25-27KG.m
- 28-32KG.m
- What is the insulation class of 4303BY Armature and field winding?
- Class 200
- Class180
- Class150
- Class 220
- What is the Gear ratio of pinion and bull gear of Traction Motor of MEMU?
- 91:02
- 20:19
- 20:91
- 91:20
- What is the Gear ratio of pinion and bull gear of Traction Motor of MEMU?
- 1:4.55
- 1:3.55
- 1:5.55
- 1:5.55
- The clearance between new carbon brush and the brush holder is not grater than ?
- 3.5mm
- 1.5mm
- 2.5mm
- 0.5mm
- Backlash between the pinion and gear wheel of 4303BY traction motor is
- 0.20 – 1.2mm
- 0.15 – 1.2mm
- 0.17 – 1.2mm
- 0.25 – 1.2mm
- How man y inter poles in Main compressor?
- 04
- 02
- 06
- 05
- What is the Main compressor rating ?
- 20KW
- 15KW
- 10KW
- 12.5KW
- What is the Auxiliary compressor closing contactor?
- CC1
- CC2
- CC4
- CC3
- A SrDEE can sign NS indent up to a value of
- 10 Lakh
- 5 lakh
- 2.5 Lakh
- 15 Lakh
- How many digits will be there in a PL Number
- 6
- 7
- 8
- 9
- NS indent of value Rs 15000 is to be submitted on
- S1302
- S1302A
- S1313
- S1313A
- what is the max allowable limit of Tread wear in mm
- 5
- 6
- 7
- 3
- what is the max allowable limit of flange wear in mm
- 3.5
- 2
- 3
- 6.5
- what is the crown clearance limit of a axle box of MC in mm
- 38±6
- 30±6
- 32±6
- 42±6
- what is the crown clearance limit of a axle box of air suspension coach in mm
- 30±6
- 38±6
- 40±5
- 42±69
- what is the tonnage capacity of MEMU MC axle
- 20
- 13
- 23
- 16
- which is used for lubrication of dash pot
- SP77
- SP68
- SP50
- SP57
- MCP governor setting is
- 6.0- 7.0 kg/cm.square
- 8.0- 7.0 kg/cm.square
- 6.0-8.0 kg/cm.square
- 6.0- 7.5 kg/cm.square
- which is the below equipment is in brake controller ?
- Application magnite valve
- holding magnite valve
- stabilising valve
- puppet valve
- EP Unit safety valve settingb in MEMU is
- 4.2 kg/cm.square
- 3.2 kg/cm.square
- 5.2 kg/cm.square
- 2.2 kg/cm.square
- which presser is used in Auto Brake ?
- BP
- MR
- FP
- BC
- Parking Brake limiting valve setting in MEMU is
- 4.0 kg/cm.square
- 5.0 kg/cm.square
- 7.0 kg/cm.square
- 6.0 kg/cm.square
- what use of stabilising valve in Ep Unit in MEMU is
- smooth braking
- hard braking
- intial braking
- fast braking
- how many spit pins in pantograph assembly in MEMU ?
- 20
- 35
- 25
- 19
- SS 1 safety valve setting in MEMU is
- 6. 5 kg/cm.square
- 7.75 kg/cm.square
- 8.0 kg/cm.square
- 8.75 kg/cm.square
- Air spring bellow pressure controled by
- leveling valve
- check valve
- stabilising valve
- dual check valve
- With OL Reset switch , how many relays can be reset
- 6
- 5
- 7
- 8
- The voltage of primary winding of MEMU transformer is
- 25KV
- 266V
- 141V
- 752V
- The capacity of oil pump in MEMU is
- 360 lpm
- 263.6 lpm
- 363.6 lpm
- 400 lpm
- HRC fuses for protecting the battery is rated at
- 100A
- 80A
- 63A
- 75A
- MCB rating for oil pump is
- 10
- 20
- 15
- 16
- MCB rating for rectifier fan
- 10
- 20
- 15
- 12
- CLR drop out current value is
- 425V
- 450A
- 425 A
- 450V
- The resistance used for providing weak field modification is
- 0.091 Ohms
- 0.027 Ohms
- 0.564 Ohms
- 0.891 Ohms
- When MPT is moved into Shunt Position which wire No gets supply
- 3
- 4
- 1
- 2
- In DMH brake, entire BP is exhausted through which valve?
- Pilot valve
- Equalising discharge
Valve - Triple valve
- DMH check Valve
- Dropping reactor will be in power circuit upto which notch?
- 10
- 12
- 15
- 11
- Traction Ammeter is connected to which TMs?
- 1 AND 2
- 2 AND 3
- 1 AND 3
- 4 AND 1
- Total Voltage from Untapped winding is
- 266V
- 391V
- 141V
- 782V
- RTL and PFD is cooled using
- Radiator fan
- Transformer oil
- Rectifier fan
- Natural air
- Which of these relays cause motor contactors to open?
- EFRA - II
- OLP
- PRV
- RFAR
- TSS is kept in TEST position during which instance?
- HT Test
- LT Test
- Running
- None of these
- The train is said to be running in half power between ___ & ___ notches
- 3 and 12
- 1 and 11
- 10 and 22
- 11 and 22
- TL is said to be in service during _____ notches
- Even
- Odd
- All
- None of these
- The order of closing of tapping contactors in 1st Notch is
- T1, T8
- T1, T7, T9
- T9, T1, T7
- , T7, T9
- Malfunctioning of Oil pump would result in acting of which relay?
- NVR
- NVR
- RFAR
- TTR
- Choke tank houses
- SL, TL, DL
- RTL,PFD, TL
- RTL, DL, PFD
- SL, PFD, DL
- Rectifier fan should work when ____ relay is energised
- TTR
- ABR
- RFAR
- BIR
- Current rating of Rectifier fan motor is
- 10 A
- 4.5 A
- 7 A
- 15 A
- Fully Charged Battery will have specific gravity of
- 1260
- 1100
- 1280
- 1220
- Each cell in battery will produce __ volts
- 2.2V
- 3.5V
- 1.5V
- 4.5
- The switch for getting battery feed from other MC is
- COC
- CCOS
- COS
- SOCS
- Controlling relay of Main Compressor is
- RFAR
- TTR
- SR
- CR
- OHE line voltmeter is connected to ______ circuit
- Auxiliary I
- Auxiliary II
- Primary
- None of these
- Fans power circuit is protected by HRC fuse of
- 15A
- 20A
- 63A
- 10A
- Which of the following is neither current nor voltage operated relay?
- LTR
- TTR
- BIR
- ABR
- Coil resistance of OLP/EFRP at 20 degree Celsius is
- 100 Ohms
- 150 Ohms
- 173 Ohms
- 196 Ohms
- Which of these should be in open condition in order for SR to pick up?
- Tap Changers
- Motor Contactors
- Negative Contactors
- None of these
- Resetting of OLP is done through
- OL reset switch
- Manual reset
- Cannot reset
- None of these
- AOVR is located in
- Switch Group 1
- Relay panel
- LT room
- Switch Group 2
- Pulse generator for speed measurement is attached in wheel no
- 1
- 2
- 3
- 4
- The number of pulses for one wheel axle rotation is given by
- 100
- 120
- 60
- 80
- Maximum voltage across that can be taken from the first notch is
- 38 V
- 78.2V
- 100V
- 45V
- Minimum Closing voltage for LTR is
- 100 V DC
- 110 V
- 55 V DC
- 85 V DC
- Height from centre line of coupler to floor level for MEMU/EMU is
- 1590 mm
- 1030 mm
- 1290 mm
- none of these
- The number of relays present behind driver in relay panel is
- 10
- 8
- 6
- 7
- Which of the following is governor bypass switch for Equipment Governor?
- GS-1
- GS-2
- GS-3
- GS-4
- Silica gel breather is found near to
- choke tank
- Transformer tank
- On roof
- Conservator tank
- BIS switch is located at
- Driver desk
- LT room
- HT room
- None of these
- BRH full form is
- Bogie releasing
handle - Brake releasing handle
- Brake rigging handle
- BP releasing handle
- Bogie releasing
- Following is a safety item in MEMU
- head light
- Flasher Light
- A Head Light B Flasher Light C Horn
- All
- TL will be in circuit in
- Even notches
- All notches
- Odd notches
- none
- Location of AOVR is
- Switch group 1
- Switch group 2
- Tap changer box
- Driver cab relay panel
- In MEMU maximum MR Pressure is
- 5.0 kg/cm²
- 7.0kg/cm²
- 8.0 kg/cm²
- 6.0 kg/cm²
- Additional limiting valve output pressure in TC
- 1.6 Kg/cm²
- 3.5 Kg/cm²
- 1.8 Kg /cm²
- 2.5 Kg/cm²
- Brake Cylinder Pressure in MEMU-MC is
- 1.2 kg/cm²
- 1.4 kg/cm²
- 1.6 kg/cm²
- 2 kg/cm²
- Auto brake releasing time in MEMU
- 2-4 sec
- 5.5-6.5sec
- 5.5- 7 sec
- 2.7-3.5 sec
- No.of Positions in brake controllers
- 6
- 5
- 7
- 4
- Which pressure is dropped while applying the guard emergency brake
- BP
- MR
- AR
- ER
- Which valve energized first while applying partial EP
- HMV
- AMV
- SBV
- PRV
- In MEMU one of the following is a part of brake controller
- Tripple valve
- Equalizing discharge valve
- Safety valve
- Application magnet valve
- In MEMU one of the following is a part of EP unit
- Equalizing valve
- Triple valve
- Puppet valve
- none of the above
- Safety valve of Main compressor is set at
- 8 kg/sq.cm
- 7 kg/sq.cm
- 6 kg/sq.cm
- 5 kg/sq.cm
- Pressure build up time for auxiliary compressor is approx
- 6 mins
- 7 mins
- 12 mins
- 8 mins
- In Puppet valve, C&D are called _______ ports
- Equalising
- Limiting
- Charging
- Discharging
- In Puppet valve, A&B are called _______ ports
- Equalising
- Limiting
- Charging
- Discharging
- PB reservoir capacity is
- 20L
- 10L
- 15L
- 9L
- Capacity of Air suspension One supplementary reservoir of MC is
- 15L
- 20L
- 30L
- 40L
- EP Unit has how many ports
- 6
- 5
- 4
- 7
- In DMH brake, entire BP is exhausted through which valve?
- pilot valve
- Equalizing discharge
Valve - Triple valve
- Emergency brake Valve
- Application Magnet valve gets supply from which wire
- 36
- 37
- 38
- 39
- In EP position , which ports are in closed condition in puppet valve?
- A & B
- B & D
- C & D
- A & C
- Holding Magnet valve gets supply from which wire
- 37
- 38
- 36
- 39
- In Auto position which ports are in open condition in puppet valve?
- A
- B
- C
- D
- Capacity of pantograph reservoir is
- 120 L
- 100 L
- 90 L
- 150 L
- required for raising the pantograph Minimum pressure is
- 6 kg/sq.cm
- 4.5 kg/sq.cm
- 5 kg/sq.cm
- 7 kg/sq.cm
- Minimum pressure required for working of Tapchanger is
- 4 kg/sq.cm
- 4.5 kg/sq.cm
- 3.16 kg/sq.cm
- 5 kg/sq.cm
- Pressure from baby compressor is used for which operation?
- Brake Application
- Horns
- VCB closing
- None of these
- The relative humidity of air at the outlet of Air drier should be approx
- <45%
- <10%
- <25%
- <35%
- Secondary Suspension in MEMU is recently received coaches is
- Air Suspension
- Helical Spring
- Bolster Frame
- Dash Pot
- Shacku coupler lateral movement is restricted by
- Pull Rod
- Brake Hanger
- Centering device
- Lateral Dampers
- Cacitapy of Air suspension reservoir in MEMU Coach in liters
- 150L
- 110L
- 120L
- 90L
- Vertical load of Bogie is carried by
- Side bearers
- Centre Pivot
- Helical springs
- None of these
- What is the condemn wheel dia. of MEMU motor coach in mm
- 877
- 850
- 919
- 910
- How many types of wheel discs are used in MEMU coaches
- 3
- 2
- 4
- 5
- which type of wheel disc are used in MEMU coaches
- Cast
- Forged
- A & B
- None
- how many vertical dampers are provided in air spring suspension MC
- 4
- 5
- 6
- 7
- how many colour codes are given to the helical springs according to their strength
- 2
- 3
- 4
- 5
- new dimension of bogie transom noses
- 241.506mm
- 243.0mm
- 245.0mm
- 246.0mm
- If traction motor No. 4 is grounded, which of the following Relay will act
- OL 4
- OLP
- OL 1 AND 4
- EFRP
- material used in top and bottom axle bearing
- brass
- gun metal
- phosphorus bronze
- bronze
- Lubricating oil used for Kirloskar make main compressor 3HC-55
- SS-68
- SAE 120
- SAE 150
- SS-100
- Condemn diameter of commutator for TM make 4601 BX is
- 305 mm
- 310 mm
- 325.5 mm
- 305 mm
- How much voltage is required for load testing of traction motor
- 50
- 60
- 40
- 65
- What type of the brush grades used in 4601 Traction Motor?
- EG14D
- E88X(I) C
- EG7097
- All of these
- What percent is the pinion bedding is required to fitment of pinion on shaft?
- 90%
- 80%
- 60%
- 95%