DIESEL English
Fill in the blanks with correct answer from the following.
1. Fuel oil relief valve Pressure is............... kg/cm2
(A) 08
(B) 5.2
(C) 7.2
(D) 2.2
2. Work of after cooler is to increase .............
(A) Quantity (B) Density (C) Volume (D) None
3. Temperature of ETS.3 is .............. 0C
(A) 90 (B) 160 (C) 85 (D) 150
4. Brake system of WDM2 is ..............
5. Tractive effort of WDM2 locomotive is ..............kg.
(A) 38000 (B) 45600 (C) 32400 (D) 34000
6. Suction timing of WDM2 locomotive...............
(A) 2730 28’ (B) 1730 28’ (C) 730 28’ (D) None
7. Opening time of inlet valve of WDM2 locomotive is ...--
(A) 430 48’ (B) 480 48’ (C) 6330 48’ (D) None
8. Axle load of WDM2 locomotive is ..............ton.
(A) 18.8 (B) 20.0 (C) 20.3 (D) 13.8
9. Minimum wheel diameter of locomotive is .............mm.
(A) 1000 (B) 950 (C) 906 (D) 1016
10. Maximum wheel diameter of locomotive is .............mm.
(A) 1000 (B) 990 (C) 1092 (D) 950
11. Regulating Valve Pressure of lubricating Oil ...............kg/m2.
(A) 04 (B) 03 (C) 05 (D) 08
12. Opening time of Exhaust Valve of WDM2 is ................
(A) 41.28 (B) 68.48 (C) 78.02 (D) None
13. Fuel Oil tank capacity of WDM2 locomotive is .............liter.
(A) 6000 (B) 5000 (C) 2000 (D) None
14. Compression Ratio of WDM2 loco is .............
(A) 1 : 12.5 (B) 1 : 7 (C) 1 : 15 (D) 1 : 18
15. There are.............. nos. traction motor fitted in locomotive.
(A) 06 (B) 04 (C) 03 (D) 02
16. Break.in pressure of fuel oil injector is ............ PSI.
(A) 1000 (B) 3000 (C) 2000 (D) 4000
17. Type of bogie fitted in WDM2 is .................
(A) CO.CO (B) BO.BO (C) BO.CO (D) None.
18. During modification of flesher light time delay is set at ..............
(A) 30 Sec (B) 120 Sec (C) 60 Sec (D) None
19. Oil capacity of Suspension Bearing in WDM3A is .............litre.
(A) 4.5 (B) 08 (C) 6.5 (D) None
20. First Notch Current of WDM2 is ............Amp.
(A) 200 (B) 100 (C) 400 (D) 300
21. Power time of WDM2 locomotive is ………….
(A) 1380 32’ (B) 1180 32’ (C) 1280 32’ (D) 1000 32’
22. Closing time of exhaust valve of WDM2 loco is………..
(A) 900 (B) 600 (C) 300 (D) 1200
23. Capacity of Water in water cooling system is ……….liter
(A) 1210 (B) 1000 (C) 1510 (D) 2000
24. Correction factor of ABC is …………….
(A) 0.9 (B) 1.4 (C) 8.2 (D) None
25. IHP of WDM2 loco is ……………
(A) 2750 (B) 3100 (C) 2600 (D) 2800
26. No of filter in filter drum is ………….
(A) 05 (B) 10 (C) 07 (D) 08
27. RPM of WDM2 engine in idle condition is …………..
(A) 400 (B) 300 (C) 1000 (D) 450
28. After operating of PCS engine become ……….
(A) Idle (B) Start (C) under repair (D) None
29. No. of rings in steel cap piston is ………….
(A) 07 (B) 06 (C) 05 (D) None
30. Type of Bogie of WDS6 is …………
(A) Co.C0 (B) Bo.Bo (C) Bo.Co (D) None
31. Viscosity of lube oil at 1000C is …………. Centi stock
(A) 210 (B) 120 (C) 110 (D) None
32. In lube oil system bypass valve pressure is …………
(A) 10 PSI (B) 20 PSI (C) 30 PSI (D) None
33. Tappet Clearance of WDM2 locomotive is …………… thou
(A) 34 (B) 32 (C) 30 (D) 36
34. No. of Lead acid batteries fitted in locomotive are ................
(A) 08 (B) 06 (C) 10 (D) 12
35. DC traction ............ is used in locomotive.
(A) Motor (B) Battery (C) Generator (D) None
36. Engine RPM at the time of dynamic braking is ...............
(A) 650 (B) 7580 (C) 500 (D) 580
37. In transition panel of WDM2 locomotive no. of transition card are .............
(A) 06 (B) 08 (C) 04 (D) 02
38. For battery charging and lighting of locomotive ...............generator is fitted.
(A) DC (B) AC (C) AC&DC (D) Auxiliary
39. Electrolyte used in lead acid battery is .............
(A) PbO2 (B) Cuso4 (C) H2SO4 (D) None
40. ............ is done in shut down condition of engine.
(A) Load test
(B) Current test
(C) dry run test
(D) Wheel test.
41. No of Control card in control unit of micro processor locomotive is………
(A) 04 (B) 03 (C) 05 (D) 08
42. There are ........... positions of MCOS.
(A) 03 (B) 07 (C) 05 (D) 02
43. There are ................. transition in WDG3A locomotive.
(A) 02 (B) 01 (C) 04 (D) None
44. Rear truck traction motor blower cools ............ traction motor.
(A) 4,5,6 (B) 2,3,5 (C) 2,4,2 (D) 1,2,4
45. There are ............. cards in excitation panel of WDM2 loco.
(A) 02 (B) 03 (C) 07 (D) 05
46. Test of .......... is done whether Governor is able to open full fuel rake.
(A) Dry run (B) load test (C) Current test (D) Slip test.
47. DC Generator works on the principle of ...............
(A) Farade (B) Newton (C) Mendlif (D) Flaming
48. Battery safety Relay protects the ..............
(A) Battery (B) Loco Panel (C) Generator (D) exciter
49. There are ............. transition in WDM2 locomotive.
(A) 02 (B) 06 (C) 03 (D) 04
50. Oil pressure of wood word Governor is ……………. PSI.
(A) 100 (B) 80 (C) 220 (D) 120
51. At ………… 0C temperature engine temperature switch-2 pick-up
(A) 120 (B) 80 (C) 72 (D) 92
52. There are ………. power contractors in WDM2 locomotive
(A) 02 (B) 08 (C) 09 (D) None
53. At ………. stage selector handle remains during dynamic braking
(A) Close (B) Open (C) Breaking (D) None.
54. ……….. power contractors are in WDP4 locomotive
(A) 08 (B) 06 (C) 09 (D) NIL
55. In ………….. box axle generator of locomotive is fitted
(A) L06 (B) L04 (C) L02 (D) L01
56. The oil pressure of electro hydraulic governor is………….
(A) 200PSI (B) 125KG (C) 135 PSI (D) 600PSI
57. RPM of WDS-6 at 08th notch is ………………..
(A) 1100 (B) 400 (C) 1200 (D) 600
58. ………R.P.M.. is minimum speed of GM Locomotive engine without idle Relay
(A) 200 (B) 249 (C) 250 (D) 269
59. TM Pinion and bull gear ratio in WDP4 loco is|………….
(A) 17:90 (B) 17:77 (C) 35:90 (D) 18:65
60. Air compressor of GM locomotive is ………..
(A) Single Stage (B) Double Stage (C) Four Stage (D) 03 Stage
61. …………….. is a paperless recording & indicating system
(A) Medha (B) Memotal (C) Hasler upgraded (D) None of these.
62. ……….. is not the cause of temporary slip
(A) Wet line (B) Excessive Load (C) Axle lock (D) Driver using higher notches at once
63. The bearing used in rotor of Traction Alternator type 10106 AZ is……….
(A) NU 330 (B) NH 330 (C) NU 314 (D) NH 300
64 . ………. is the singular costliest item of the diesel locomotive
(A) Crank Shaft (B) Cam Shaft (C) Engine block (D) Traction Generator
65. BHP of a WDM.2 loco is ………… (A) 2300 (B) 2400 (C) 2600 (D) 3100
66. The colour of fixed pointer of Air Flow Indicator is …………. (A) Red (B) White (C) Blue (D) Black
67. The standard colour of humidity indicator in air dryer is…………
(A) Orange (B) Purple (C) Blue (D) White
68. Air supply to power contractor is from………..
(A) MR.1 (B) MR.2 (C) BP pressure (D) HS.4 valve
69. ……….. type of lubrication system in used in WDP.2 loco.
(A) Splash Type (B) Forced feed (C) Self lubricated (D) None of these
70. ……….. Solenoid operated on idle condition in WW Gov.
(A) C Solenoid (B) B Solenoid (C) A Solenoid (D) None
71. ………. is the maximum permissible deflection of main generator.
(A) ±.0005” (B) ±.001” (C) ±.0007” (D) ±.0008”
72. Temperature difference of exhaust gas between two cylinders of WDM2 loco should not exceed …………. 0 F. (A) 100 (B) 200 (C) 150 (D) 80
73. Hydraulic testing pressure of piston pin is ………….
(A) 7 Kg/Cm2 (B) 6 Kg/Cm2 (C) 8 Kg/Cm2 (D) 5 Kg/Cm2
74.Maximum Ring gap of compression piston ring is -----------------inch
(A) 0.200 (B) 0.300 (C) 0.100 (D)0. 150
75.Maximum Side clearance of compression piston ring is -----------------inch.
(A) 0.012 (B) 0.003 (C) 0.001 (D) 0.0015
76.Ring gap of oil conformable piston ring is -----------------.
(A) 0.030’’ to 0.125’’ (B) 0.050’’ to 0.200’’ (C) 0.040’’ to 0.150’’ (D) 0.050’’ to 0.300’’
ANSWER 1. B 2. B 3. A 4. C 5. B 6. A 7. C 8. A 9. D 10. C
11. A 12. A 13. B 14. A 15. A 16. D 17. A 18. C 19. B 20. D
21. B 22. B 23. A 24. A 25. C 26. D 27. A 28. A 29. C 30. A
31. A 32. B 33. A 34. A 35. A 36. A 37. C 38. D 39. C 40. C
41 B 44 A 45 C 46 A 47 A 48 A 49 C 50 A
51 C 52 C 53 C 54 D 55 C 56 C 57 A 58 A 59 B 60 B
61 A 62 C 63 A 64 A 65 B 66 A 67 C 68 A 69 B 70 D
71 D 72 A 74 A 75 A 76 A
11. A 12. A 13. B 14. A 15. A 16. D 17. A 18. C 19. B 20. D
21. B 22. B 23. A 24. A 25. C 26. D 27. A 28. A 29. C 30. A
31. A 32. B 33. A 34. A 35. A 36. A 37. C 38. D 39. C 40. C
41 B 44 A 45 C 46 A 47 A 48 A 49 C 50 A
51 C 52 C 53 C 54 D 55 C 56 C 57 A 58 A 59 B 60 B
61 A 62 C 63 A 64 A 65 B 66 A 67 C 68 A 69 B 70 D
71 D 72 A 74 A 75 A 76 A
Answer the following multi-optional objective type question:-
1. Radiator fan is controlled by whom?
(a) ECC coil (b) outer drum (c) right angle gear box (d) none of these
2. What is the height of rail guard of WDM2 loco from rail level?
(a). 3 inch. (b) 4 inch (c) 5 inch (d) none of these
3. What is the condemning limit of cylinder head valve disc thickness?
(a) 1.6 mm (b)1.2 mm(c)1.4mm (d) 2.1 mm
4. What should be the temp. Difference between cylinder head and valve seat insert during the fitment of valve seat insert? (a).2500 F (b) 2050 F (c)2250 F (d) none of these
5. What is the water capacity of GM loco?
(a) 1045 lit. (b)1145 lit(c)945 lit(d)1050 lit.
6. what is the elongation of piston Conn. Rod bolt WDG 3A loco Motive ?
(a) 0.020 inch (b) 0.018 inch(c)0.015 inch(d)0.022 inch
7. What is the total length of cylinder head valve ? (a) 292.12 mm (b)292 mm(c)290mm (d)none of these
8. what is the length of piston stroke ? (a)10.50 inch. (b)10.05 inch (c)11. 5 inch (d)none of these
9. What is the fuel oil capacity of GM locomotive. ? (a) 6000 lit. (b)5000 lit(c)5500 lit(d)none of these.
10. what is the size of engine crank pin?
(a) 6 inch (b)6.2 inch(c)6.05inch(d)none of these
11. What is the overlap period of fuel efficient loco. ?
(a)1500 (b)1300 (c)1400 (d) none of these
12. what should be the minimum height of cylinder valve spring at weight of 118 pound ? (a) 2 13 /16 inch (b) 315/16 inch(c) 313 /16 inch (d)none of these
13. What is the hydraulic testing pressure of Eng. Block? (a)100 PSI (b)120 PSI (c)150 PSI (d)200 PSI
14. What is thrust of crank shaft? (a) 0.010 to 0.017inch (b)0.012 to 0.015 inch(c)0.012 to 0.019nch(d)0.010 to 0.019 inch
15. Valve seat insert is cooled in which media? (a) Liquid hydrogen (b)liquid nitrogen (c)active alumina(d)none of these
16. What is the bypass valve pressure of primary filter in fuel system of GM LOCO. ? (a)10 PSI (b)50 PSI (c)30 PSI (d)20 PSI
17. What is the condemning limit of crank shaft thrust? (a)0.035 inch. (b) 0.025 inch (c)0.045 inch (d)0.015 inch
18. How many position are of MU2B valve? (a)2 (b)3 (c)5(d)4 19. How many “O” rings are in cylinder liner ? (a)2 (b)3 (c)5(d)4
20. what are the RPM of radiator fan ? (a)1050 (b)1250 (c)1350(d)1450
21. LOCO Speed is observed by which equipment? (a)exciter generator (b)techo generator (c)axle generator(d)pulse generator
22. Which interlock is open while pick up of oil pressure switch ? (a)71-50 F (b)71-50 K (c)50D- 50J(d)none of these
23. Which relay operates during starting ground of WDM3A LOCO? (a)GR-1 (b)GR- 2 (c)TR (d)none of these
24. At what Brake pipe pressure interlock of PCS closed? (a)3.1kg/cm2 (b) 4.1kg/cm2 (c) 2.8kg/cm2 (d) 5.0kg/cm2
25. What are the rpm of Locomotive after operation of GFOLR ? (a)650 (b)1000 (c)400(d)1050
26. Current generated by traction motors during Dynamic brake is supplied to whom? (a)Main Generator (b) exciter Generator (c) Grids (d) Non of these
27. At what pressure PCS drop ? (a)3.1 kg/ cm2 (b)4.11kg/cm2 (C)2.81kg/cm2 (d)5.01kg/cm2
28. Up to what time start button is pressed in pre lube motor fitted locomotive? (a)50sec (b)60sec (c) 70sec (d) 40sec
29.What is Axle load of WDS4 loco? (a) 30Ton (b)40Ton (c) 20Ton (d)18.8Ton
30. How much fuel discharge in cc during dry run test? (a)36.1 (b)34.1 (c)38.1 (d)30.1 31.what is the rake setting of F.I.P during dry run test?
(a)22.5mm (b)28.5mm (c)25.5mm (d)29.5mm
32. what is the surface finish of main bearing journal ? (a)25rms (b)35rms (c)30rms (d)20rms
33. Which type of bogie used inWDG3A locomotive? (a) TSHC (b) HTSC (c) HCSC (d) None of these
34 FTTM blower is driven by whom In WDS6 Loco? (a) Gear (b) Motor (c) Belt (d) None of these
35. In micro control based Governor by pass switch is fitted for whom? (a) BAP (b) Lube oil (c) Starting ground (d) None of these
36. Which contractor is picked up by ETS2? (a)R-3 (b) R-2 (c) R-1 (d) None of these
37. What work is done by ETS3? (a) Fan on full speed (b) Fan on slow speed (c) Hot Engine indication (d) None
38.What is Backless of cam gear? (a)0.009” to 0.019” (B) 0.009” to 0.029” (c)0.019” to 0.29” (d) 0.019” to 0.039”
39. What percentage of WDM2 locomotive is beared by center pivot? (a) 70% (b) 80% (c) 40% (d) 60%
40. What is minimum holding time of cylinder head in second? (a) 50 (b) 60 (c) 30 (d) 40
41. What is fitted at water pump to protect the mixing of water and lube oil? (a) Oil ring (b) O ring (c) oil clinger (d) None of these
42. What material is used of main bearing Upper and back side? (a) Lead (b) Aluminum (c) Copper (d) Tin
43 cooling of G.I. casing in WDS6 loco of TSC is done by Whom? (a)Water cooled (b) Air cooled (C) Lube oil cooled (d) None of these
44. How many slip rings are fitted in alternator? (a) 04 (b) 02 (c) 06 (d) 01
45. What is the height of Cattle Guard from rail in WDM2Loco? (a) 6 1/2” (b) 5 1/2” (c) 7 1/2” (d) 8 1/2”
46. BP charging is done by which valve? (a) C2 Relay valve (b)Add. C2 Relay valve(c)F1 selector valve(d) none of these
47. What is the Axle Box lateral clearance of wheel no. 1,3,4&6 of WDM2 Loco? (a) 3to 6cm (b) 2to 8mm (c) 6 to 12cm (d) 12 to 18mm
48. What is the torque for tightening of cylinder head Nut? (a) 550 ft.lbs (b) 650 ft.lbs (c) 450 ft.lbs (d) 500 ft.lbs
49.What is the Thickness of compression seat of cylinder head? (a) 0.030” (b) 0.022” (c) 0.028” (d) none of these
50.How many studs are provided for fitment of cylinder head with block (a) 7 (b) 6 (c) 8 (d) 5
ANSWER 1. A 2. B 3. A 4. A 5. A 6. D 7. D 8. A 9. A C 10. A
11. C 12. C 13. A 14. A 15. B 16. C 17. A 18. A 19. B 20. B
21. B 22. A 23. B 24. B 25. C 26. C 27. C 28. 29. C 30. B
31. D 32. C 33. B 34. C 35. A 36. B 37. C 38. A 39. D 40. D
41 A 42 A 43 B 44 B 45 C 46 B 47 C 48 A 49 D 50 A
Write True and False from following:-
1. Permissible wheel diameter difference on the same axle in WDM2 loco is 0.5mm.
2. One End of ‘S ‘pipe is mounted on the needle valve in the lubrication system of expresser.
3. UST should be done to check the crack of yoke guide .
4. In 4-stroke Engine one cycle is completed in 2- stroke of the piston.
5. Air cooling system is sufficient in diesel engine.
6. Injection time in WDM2 loco is 29 degree.
7. The auto drain valve blows during time of unloading.
8. There are 3 position of A—9 valve.
9. A good transmission takes less space and light in weight.
10.Traction generator is self excited DC generator.
11.The total battery voltage is 72 volt in locomotive.
12.WDG3A locomotive have DC-DC transmission.
13.During Dynamic braking main generator is used to excite the field of traction motor.
14.BKBL is run by the current produces during dynamic braking.
15.In single BKT type loco at the time of dynamic braking P2, P22, S21, S31, Power contactors do not pick up.
16. ESR 1, 2, 3 pick up at 8th notch in GE Governor fitted Locomotive.
17. Engine will not race up if ERR does not pick up.
18. The Horse power of WDG4B locomotive is 4500.
19. BKBL motor is used to cool the traction motors.
20. The balancing current in Governor speed coil is 475 mA.
21. The capacity of MB2 circuit breaker is 200 A in WDM3B locomotive.
22. The capacity of MB1 circuit breaker is 150 A in WDM3B locomotive.
23. There are 3 number of digital input cards in Microprocessor locomotive.
24. The fuel pump motor is DC compound wound motor
25. In Alternator fitted locomotive while starting engine, exciter generator works as a motor.
26. Loco will shut down if MUSD is taken from run position to stop position
27. The Alternator and exciter is mounted on the same shaft in WDP4/WDG4
28. The delay time of TDR is 60 sec
29. In microprocessor locomotive transition takes place by Axle Generator.
30. Maximum 5no. Traction motor can be Isolated in microprocessor locomotive
31. Load meter will show current if any traction motor is isolated in microprocessor locomotive
32.The AC traction motors are provided in WDP4 loco.
33. Horse Power of each traction motor is 670 KW in WDP4 loco
34. Auxiliary generator is self excited DC generator.
35. The VCD indication will glow if there is no operation done up to 60 seconds in VCD fitted loco.
36.Number of snubber in one bogie is 8 nos.
37.Brake piston travel should be 3” to 5” .
38.C3W valve becomes unbalanced when B.P is dropped.
39.Penalty brake does not apply if MCB circuit braker is on.
40.Length of brake piston stroke is 10.5”.
41.MU2B valve has two positions.
42.140o Overlapping period is provided in WDM3A
43.120o Overlapping period is provided in WDM2
44.Length of long equalizing beam is 6’11’’
45.Air is compressed in two stages by compressor in Diesel loco.
46.Engine cooling time is checked between 600 C to 800 C
47.Explosion door is provided at R2& L7 In WDM2 loco.
48.Height of rail guard from rail is 6”
49.Normal temperature of diesel loco is 650 C to 700 C, Engine should not raced below 550 C of engine temp.
50. Length of short equalizing beam is 6’11’’
51. Distance between TDC and Injector point on Fly wheel is 11-5/8”.
52.Loading and unloading time of compressor are 3 min. and 1 min. respectively.
53.Hydraulic test of water pump is done at 50psi.
54.Hydraulic test of cylinder head is done at 500psi. with cold water.
55.Hydraulic test of cylinder head is done at 70psi. with hot water.
56.Hydraulic test of Lub-oil pump is done at 100psi.
57.Hydraulic test of After cooler is done at 70psi.
58.Hydraulic test of Radiator core is done at 150psi.
59.In high speed bogie roller bearing is used in place of suspension bearing.
60. There are 03 nos oil conformable rings in piston.
61.Heat is generated outside of cylinder in IC engine.
62. Injector sends the fuel in petrol engine cylinder.
63. Ignition of fuel in Diesel Engine is done by spark plug.
64. In petrol engine mixture of fuel is made in carburetor.
65. Codal life WDM2 loco is 42 year.
66. Water is cooled by after cooler.
67. Overlap period of WDM2 loco is 123048 minutes.
68. Suction period of WDM2 loco is 1900.
69. Exhaust Valve opens 600 at BDC in WDM2 loco.
70. Deflection of Crank Shaft is 0.0008 inch.
71. Tri mount Co.Co Bogie is fitted in WDM2
72. Weight of WDM2 loco is 123 Ton.
73. OSTA RPM of WDM2 loco is 1120 ± 30.
74. Firing Order of WDM2 is not R to L,14768523.
75. Engine becomes idle if ETS3 operate.
76. Compression ratio of WDM2 loco is 1:20.
77. Compression timing of WDM2 is 150020’.
78. Correction factor of ABC is approximate 0.9.
79. Concentricity of the valve seat after grinding should not be more than 0.05mm.
80. Wheel dia of WDM 2 Loco is 1092mm
81. The permissible wheel dia difference of WDM2 loco is up to 20mm.
82. Minimum and maximum buffer height of a WDM2 loco over buffer is 1030 And 1105 respectively.
83. Coil resistance of GR relay is lowest.
84. The minimum engine RPM of GM locomotive with LIR is 250 RPM.
85. The lube oil capacity of GM loco is 910 Liters
86. The maximum speed of the WDG locomotive is 120 Kmph
87. Triple Suspension type bogie is fitted in the GM locomotive
88. Dry run Test is done in idle condition.
89. The function of breather valve assembly is to maintain vacuum in the compressor crank case.
90. 50 cms vacuum is prescribed by RDSO in engine for mail express train.
91. Exhaust choke size of C.2 relay valve is 6.0mm
92. Hydraulic testing of cylinder head is carried out on 1900 F and at 70 PSI. QuestionPaper.Org
93. Unit of SFC is Kcal/hp/hr
94. Unit of SFC is gm/bhp/hr
95. There are two transition in WDM2 locomotive.
96. There are four cards in transition panel of WDM2 loco.
97. No ESR is picked.up during dynamic braking.
98. During Dynamic braking auxiliary generator is used for charging of Batteries.
99. There is DC.DC transmition in WDM2 locomotive.
100. Maximum speed of WDG3A locomotive is 120 KMPH.
101. In traction motor, Interpol is used for protection of armature.
102. There are 12 no. carbon brushes in axle generator.
103. There are 12 no. carbon brushes in auxiliary generator.
104. There are 06 field shunt contractor in WDG3A locomotive.
105. There are 4 main pole & 4 interpoles in traction motor.
106. Governor Oil pressure of E.H. Governor is 135 PSI.
107. Negative plate of lead acid cell battery is of PbO2.
108. There are 12 main poles in BHEL traction generator.
109. Engine shutdown when dead mains relay drop during running of locomotive.
110.Engine become idle when low water switch operate.
ANSWER
1. True 2. False 3. True 4. True 5. False 6. True 7. True 8. False 9. True 10. False
11. False 12. False 13. True 14. True 15. True 16. True 17. True 18. True 19. False 20. True
21. False 22. False 23. False 24. True 25. True 26. True 27. True 28. True 29. False 30. True
31. True 32. True 33. True 34. True 35. True 36. False 37. True 38. True 39. False 40. True
41. True 42. True 43. False 44. True 45. True 46. False 47. True 48. True 49. True 50. False
51. False 52. True 53. True 54. False 55. True 56. True 57. False 58. False 59. True 60. False
61. False 62. False 63. False 64. True 65. False 66. False 67. True 68. False 69. False 70. True
71. True 72. False 73. True 74. True 75. False 76. True 77. True 78. True 79. True 80. True
81. True 82. True 83. True 84. False 85. True 86. False 87. True 88. True 89. True 90. False
91. True 92. True 93. False 94. True 95. False 96. True 97. True 98. True 99. False 100. False
101 True 102 False 103 True 104 False 105 True 106 True 107 True 108 True 109 False 110 True
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