Certificate in Blacksmith /30 0 Your Examination is Complete !You will get your result in your email id within 10 days.kindly also email your 10th Marskheet and Aadhar Card copy at iisdtindia@gmail.com. Certificate in Blacksmith 1 / 30The “reward function” in RL is used for: Defining the neural network architecture Calculating the probability of actions Evaluating the quality of an agent’s actions Filtering noisy observations 2 / 30What term describes the strategy of choosing actions to maximize cumulative rewards over time? Hyperparameter tuning Feature extraction Reinforcement learning Policy optimization 3 / 30Steel is mainly an alloy of Iron and Carbon Sulphur and Zinc Zinc and tin Phosphorous and Tin 4 / 30Balancing between trying new actions and exploiting known actions is known as: Exploration vs. exploitation Model validation Feature extraction Dimensionality reduction 5 / 30How is the boxing of ballast done? Under the rails At the rails In between two rails In between two sleepers 6 / 30Poisson’s ratio of steel is ________ 0.1 1.0 0.3 2.0 7 / 30Unit mass of Steel = ________ 785 kg/m3 450 kg/m3 450 kg/m3 7850 kg/m3 8 / 30What does the weight of the rails depends upon? Speed of train Gauge of the tracks Nature of traffic Speed of train, gauge of tracks and nature of traffic 9 / 30Name the form of track, the rails are welded together by utilising flash butt welding to form one continuous rail that may be several kilometres long. INR CBR SBBR WSR 10 / 30Which of the following is the example of impact pressure forging? striking a blow shaping by press all of the mentioned none of the mentioned 11 / 30Coal ash (or cinder) is used in initial stages of a new construction of railway for __________ wooden sleepers steel sleepers cast iron sleepers iron sleepers 12 / 30Elastic Modulus of Steel is __________ 1.5 x 109 N/mm2 2.0 x 105 N/mm2 2.0 x 105 N/mm2 1.5 x 109 N/m2 13 / 30What sets Reinforcement Learning apart from other machine learning paradigms? Pre-trained models Supervised labelling Interaction with an environment Batch processing 14 / 30In Reinforcement Learning, what does the term “agent” refer to? A person supervising the learning process A software program making decisions A labelled data points A neural network architecture 15 / 30Smithy forging can also be termed as open die forging. false true 16 / 30What are the numerical values used to evaluate the outcomes of actions taken by an agent? Observations Rewards Policies Loss functions 17 / 30Structural Steel normally has carbon content less than _______ 1.0% 0.6% 3.0% 5.0% 18 / 30The induction furnace is replacing cupolas in the foundrie True False 19 / 30Which of the following furnaces is the best to melt scrap? Cupola Electric arc Induction Blast 20 / 30In India the rails are manufactured by whom? Open hearth process Duplex process Open hearth process and Duplex process Iron sleepers 21 / 30Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways is? 15 cm 10 cm 50 cm 25 cm 22 / 30Which method is considered as one of the oldest methods of giving required shapes to the metals? casting forging forming none of the mentioned 23 / 30The crucible inside the furnace is cooled by __________ Coolant Air Water Gas 24 / 30Coreless Induction Furnace operates on ___________ Transformer Induction motor Motor 25 / 30What is the permissible percentage of Sulphur and Phosphorous content in steel? 0.1%, 0.12% 1.0%, 3.0% 3.0%, 1.0% 1.0%, 1.0% 26 / 30Which of the following is a disadvantage of Steel? High strength per unit mass High durability Fire and corrosion resistance Reusable 27 / 30The induction furnace can be used to melt as well as re-melting of the metal True False 28 / 30Modern track typically uses _____________ with a profile of an asymmetrical rounded I-beam. Modern track typically uses _____________ with a profile of an asymmetrical rounded I-beam. iron hot-rolled steel alloy of aluminium 29 / 30In forging process, metals are shaped by _____ impact cohesion tense none of the mentioned 30 / 30Cold forging is also known as simply forging. true false Exit
