Air Brake System: 1. Which pressure is adjusted by limiting valve A. F-1 pressure B. BP pressure C. FP pressure D. Synchronization pressure
2. When emergency brake application is done through A-9 in flasher light modified loco the condition of loco will be A. Loco comes to idle and nothing else happens B. Loco comes to idle, flasher light is on C. Loco comes to idle, flasher light is on & buzzer blows D. Loco does not come to idle, flasher light is on & buzzer blows
3. PATB buzzer blows when A. AFI needle is above 60 B. AFI needle is below 60 C. AFI needle is above 80 D. AFI needle is above 70
4. Unit of Air Flow Indicator (AFI) is A. Kg/cm2 B. Pound / inch C. Wagon reading D. Km/h
5. Function of Air vacuum proportionate valve is in Diesel locos for A. Acceleration B. Loco comes to idle C. For starting of loco D. For synchronization of brake
6. How many position setting of C3 W distributor valve has A. Two position setting B. One position setting C. Three position setting D. No different setting
7. On operating D-1 emergency which pressure drops A. MR B. BP C. HS-4 D. No air supply
8. How many braking position of A-9 valve have.. A. 05 breaking position B. 04 breaking position C. 03 breaking position D. 01 breaking position
9. How many braking position of SA-9 valve have.. A. 03 position B. 02 position C. 05 position D. 01 position
10. Air supply for horn is from.. A. MR-1 tank B. MR-2 tank C. ‘J’ filter D. HS-4
11. Permissible leakage of vacuum in train pipe is A. 0 cm B. Up to 10 cm C. Up to 20 cm D. Up to 30 cm
12. Overcharging (In air brake system) feature is applied by which air brake valve A. C3 W distributor valve B. VA-1B control valve C. C2-W relay valve D. VA-1 release valve
13. HB-5 relay valve is fitted in which type of brake system A. Air Brake loco B. Duel Brake loco C. In any type of loco D. None
14. In 28 VB control valve the vacuum of train pipe comes at A. Above big diaphragm B. Below big diaphragm C. Above small diaphragm D. Below small diaphragm
15. Above C2- relay diaphragm air pressure comes from A. A-9 valve B. SA-9 valve C. MR pressure D. Synchronization on pressure
16. Duplex check valve operates when MR pressure reaches at pressure (kg/cm2) A. 5 kg/cm2 B. 6kg/cm2 C. Always open D. 10 kg/cm2
17. Max. Permissible time for loco brake release in seconds is. The loco fitted with chock in C2 relay valve. A. 50 sec B. 40 sec C. 24 sec D. 30 sec
18. H-5 valves operates when BP pressure drops upto (kg/cm2) A. 1.8 kg/cm2 B. 2.0kg/cm2 C. Kg/cm2 D. Kg/cm2
19. When H5 or HB-5 valve operates which air supply goes to PCS A. MR pressure B. HS-4 pressure C. FP pressure D. BP pressure
20. When big diaphragm of VA-1B control valve gets punctured, what action will happen? A. Vacuum will drop to zero B. Vacuum will not drop down C. Vacuum will drop partially D. None
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