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Question
Match List-I (Type of jobs) with List-II (Type of Equipment) and select the correct answer using the codes:

      List-I

A.  Handling stiff and cohesive mixes used in the manufacturing of precast concrete

B.   Road construction where space and access are limited

C.   Consolidating concrete in thin slabs

D.  Vibrating both the form and the concrete

 

      List-II

1.   External vibrator

2.   Dual drum mixers

3.   Pan mixers

4.   Electric hammer

5.   Vibrating roller

 
Codes:
    A   B   C   D
A.
3    5    1    4
B.
3    2    5    1
C.
5    2    4    3
D.
5    3    4    1
Answer ( Option B)

3    2    5    1

Solution

Pan Mixer is not mobile and is, therefore, used either as a central mixing plant on a large concrete project or at a precast concrete factory. This is particularly efficient with stiff and cohesive mixes.
Dual Drum Mixer is extensively used for mixing concrete for road or pavement construction. These are used in ready-mixed concrete industry.
Electric Hammer can be used as a surface vibrator when fitted with a bit having a large flat area.
Vibrating roller is used for consolidating thin slabs.
External Vibrator is rigidly clamped to the formwork resting on an elastic support, so that both the form and the concrete are vibrated.

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