Kerala PSC Previous Years Question Paper & Answer
Page:8
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Tradesman (Diesel Mechanic)' And exam conducted in the year 2023. And Question paper code was '074/2023'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
074/23
37.
38.
39.
40.
41.
42.
43.
44.
Which of the following tap is used to start the thread while taping ?
A) Taper tap B) Bottoming tap
C) Plug tap D) Intermediate tap
What is the major cause (more than 90%) of failure in a hydraulic system ?
A) Leak of valve B) Pump
C) Tubing s in hydraulic system D) Contamination of hydraulic-fluid
Name the tool used for cutting external thread in work piece.
A) Die stock B) Hand tap
C) Die D) Hand reamer
Which of the following type of filter is more suitable to remove ferrous material from
oil in hydraulic system ?
A) Absorbent filter B) Magnetic filter
C) Offline filter D) Mechanical filter
What is the formula of calculating blank size for external threading ?
A) Blank size = Major diameter — 2 x depth of thread
B) Blank size = Major diameter — Pitch
C) Blank size = Major diameter —1/number of threads per inch
D) Blank size = Thread size — 0.1 x Pitch of the thread
Which of the following valve protect against excessive pressure in hydraulic system ?
A) Check valve B) Shuttle valve
C) Relief valve D) Globe valve
Which type of tool is used for chasing or reconditioning the damaged threads ?
A) Circular die B) Half die
C) Adjustable screw plate die D) Die nut
Name the branch of science under that you study the properties and application of air.
A) Hydraulic system B) Pneumatic system
C) Mechanical system D) Electrical system