Test: Production Engineering- 1 - Mechanical Engineering MCQ

Isothermal annealing is mainly used in alloy steel to improne.

The process of reheating to reduce brittleness without any significant loss in hardness is

The main purpose of chaplets is

Green sand mould indicates that

Disposable patterns are made of

The gating ratio 2 : 8 : 1. for copper in gating system refers to the ratio of arae of

Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as :-

Shell moulding can be used for.

An expandable pattern is used in

In which of the following metal moulds are used

Which of the following is true for centrifugal casting

If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is

The major difficulty during welding of aluminium is

The ratio of acetelene to oxygen is approximately _______ for a neutral flame used in gas welding.

In oxy acetelene gas welding the temperature at the inner core of flame is about

In are welding, penetration is minimum for

The coating material of an arc welding electrode contains which of the following
1. Deoxidising agent
2. Arc stabilizing agent
3. Slag forming agent

Arc Blow is more common in

 In an inert gas welding, the commonly used gas is

Which of the following are welding process does not used consumable electrodes.

In resistance welding, heat is produced due to resistance between

According to Chvorinov’s equation, the solidification time of a casting is proportional to (V is volume of casting):