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MCQ - Mechanical TNPSC JTO
JTO - 551 - Engineering Drawing and Draughtsman - 551 - unit - 09 - Mechanical Automobile RAC Components

26)   

 What does a symbol with two intersecting lines forming an X denote in wiring diagrams? 

A.
B.
C.
D.
Answer: B
27)   

  A plunger-operated switch symbol is typically associated with:

A.
B.
C.
D.
Answer: B
28)   

Which symbol represents a relay coil with iron core?

A.
B.
C.
D.
Answer: D
29)   

 The symbol for a spark gap in ignition circuits looks like:

A.
B.
C.
D.
Answer: B
30)   

Which symbol indicates ‘earth’ or ground connection in automobile circuits?

A.
B.
C.
D.
Answer: A
31)   

 Wire spoke wheels are mostly used in:

A.
B.
C.
D.
Answer: B
32)   

 What is the advantage of herringbone gears in automotive systems?

A.
B.
C.
D.
Answer: B
33)   

 Which automotive part uses a tapered seat for mounting?

A.
B.
C.
D.
Answer: B
34)   

 Split wheels are primarily used in:

A.
B.
C.
D.
Answer: C
35)   

Q Which component in a conventional ignition system distributes spark to cylinders? 

A.
B.
C.
D.
Answer: C
36)   

 A twin-horn circuit includes: 

A.
B.
C.
D.
Answer: B
37)   

 In a wiper motor wiring circuit, which control is used to vary speed?

A.
B.
C.
D.
Answer: D
38)   

 Vacuum-assisted brakes use engine vacuum to:

A.
B.
C.
D.
Answer: A
39)   

 The flasher relay in the turn signal system operates on the principle of:

A.
B.
C.
D.
Answer: C
40)   

 In modern electric car wiring, the auxiliary battery is used to power:

A.
B.
C.
D.
Answer: C
41)   

Which component is  not  part of a typical 3-speed automatic gearbox block diagram?

A.
B.
C.
D.
Answer: D
42)   

 What is the key feature of the V2G block diagram in electric vehicles?

A.
B.
C.
D.
Answer: B
43)   

 The engine immobilizer system requires a valid signal from:

A.
B.
C.
D.
Answer: B
44)   

 A typical dual airbag system includes how many crash sensors? 

A.
B.
C.
D.
Answer: C
45)   

In EPS block diagrams, the torque sensor is used to:

A.
B.
C.
D.
Answer: C
46)   

  In a 3-phase cold storage plant circuit, interlocking ensures:

A.
B.
C.
D.
Answer: C
47)   

 Ozonisation in cooling towers helps to:

A.
B.
C.
D.
Answer: B
48)   

 The upright freezer wiring circuit typically includes which components? 

A.
B.
C.
D.
Answer: B
49)   

 In VRV/VRF systems, what component allows both heating and cooling in separate zones?

A.
B.
C.
D.
Answer: C
50)   

 Heat recovery VRF system is useful for:

A.
B.
C.
D.
Answer: A