Question70:-In Petroil system, the percentage of lubricating oil mixed with petrol is
i. 2%
ii. 3%
iii, 5%
A:-Only i and iii
-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question71:-Which types of oil pumps are commonly used in automobile ?
i, Gear pump
ii. Rotor pump
iii, Plunger pump
A:-Only i and iii
B:-Only i and ii
C:-Only ii and iii
D:-All of the above (i, ii, and iii)
Correct Answer:- Option-B

Question72:-Usually oil is changed after
i, 10000 km
ii. 11000 km
ரர்‌. 12000 km
iv. 13000 km
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-A
Question73:-____is an important component in selective catalytic reduction
A:-EGR valve
B:-Diesel particulate filter
C:-Diesel exhaust fluid
D:-Canister
Correct Answer:- Option-C
Question74:-In a three-way catalytic converter__uses as catalyst.
A:-Cast iron
B:-Aluminium alloy
C:-Gold
D:-Platinum
Correct Answer:- Option-D
Question75:-How does a turbocharger get drive ?
A:-From exhaust gas
B:-By belt
C:-By gear
D:-From inlet gas
Correct Answer:- Option-A
Question76:-Which type of muffler produces anti noise without restricting exhaust flow ?
A:-Straight through type
B:-Electronic type
C:-Reverse flow type
D:-Baffle type
Correct Answer:- Option-B
Question77:-Which electronic device controls the engine system ?
A:-Regulator
B:-Fuse
-ECM
D:-Switch
Correct Answer:- Option-C
Question78:-How the quantity of fuel delivery vary in a FIP ?
A:-By delivery valve
B:-By feed pump