The document describes a technical quiz competition containing 20 multiple choice questions related to mechanical engineering topics like lathe operations, engine components, welding defects, beam loading, fluid flow measurement, heat transfer, tolerances, rolling processes, couplings, steel types, and material properties. It provides the questions along with the corresponding answers at the end.

1. TECHINICAL QUIZ COMPETION
By
SATHISHKUMARG
(sathishsak111@gmail.com)
ROUND 1
1.Which of the following operations cannot be performed on the lathe.
(A) Facing (B)Drilling
(C) Thread cutting (D) Slotting
2. The Compression ratio for a petrol engine generally lies between?
(A) 6 and 10 (B) 14 and 22 (C) 2 and 8 (D) 10 and 14
3. The governer in the IC engine controls the?
(A) minimum speed variation (B) cyclic speed variation
(C) load fluctuations (D) Exhaust gas temperature
4.The spindles of bench vices are usually provided with.
(A) Buttress threads (B)square threads
(C) acme threads (D) v threads
5.The angular speedof watt governor,when its height is 98mm is equal to.
(A)10rad/sec (B) 98rad/sec
(C) 9.8rad/sec (D) 5rad/sec
6.Welding defect called arc blow occurs in.
(A) Arc welding using AC current (B) Arc welding using DC current
(C) gas welding (D) mig welding
7.A simply supported beam has a uniformly distributed load on it,then the bending
moment diagram.
(A) Triangle (B) Parabola
(C)Semi circle (D)Rectangle
8.Flow of water in a pipe about 3m in dia can be measured by,
(A)Orifice meter (B)Venturimeter
(C) Rotometer (D) Pitot tube

2. 9.In the order that flow takes place between two points in a pipeline,the differential
pressure between these points must be more than
(A) Frictional force (B) viscocity
(C) surface friction (D) all these above
10.When heat is transferred by molecular collision,it is referred to as heat transfer by ?
(A) Conduction (B) Convection
(C) Radiation (D) Scttering
11.Which of the following is expectedto have highest thermal conductivity
(A) Staem (B) Solid ice
(C)Melting ice (D) Water
12.The thrust on the rotor in a centrifugal compressor is produced by.
(A)Radial component (B)Axial component
(C) Tangential component (D) Resultant component
13.The difference between the upper limit and lower limit of a dimension is called.
(A) nominal size (B) Basic size
(C) Actual size (D) tolerance
14.In order to get uniform thickness of plate by rolling process,one provides
(A)Camber on the rolls (B) Offset on the rolls
(C) Hardening of the rolls (D) Antifriction bearings
15.In arc welding,the electic arc is produced between the work and the electrode by.
(A) Voltage (B) Flow of current
(C) Connect resistance (D) all of these
16.A flange coupling is used to connect two shafts.
(A) Which are perfectly aligned (B) Which are not in exact alignment
(C) have lateral misalignment (D) whose axes intersect at small angle
17.Steal containing 0.8 to 1.5 % carbon is known as.
(A) Mild steel (B) Dead mild steel
(C) Medium carbon steel (D) High carbon steel
18.The rate of doing work is known as.
(A) Potential energy (B) Kinetic energy
(C) power (D) none of these.
19.the alloying element which can replace tungsten in high speedsteel is.
(A) nickel (B) Vanadium

3. (C) Cobalt (D) Molybdenum
20.An aluminium member is designed on the basis of.
(A)Yield stress B) Elastic limit stress (C) Proof stress (D) Ultimate stress
ANSWERS
1) Slotting, 2)10 & 14, 3) load fluctuations,
4) Acme thread, 5) 10 rad/sec, 6) Mig welding,
7) Parabola, 8) Pitot tube, 9) all the above,
10) Convection, 11) Solid ice, 12)Axial component,
13) Tolerance, 14) Camber on the rolls,
15) Connect resistance, 16)which are perfectly aligned,
17) High carbon steel, 18) Power,
19) Molybdenum, 20) Yield stress