Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

Train A and B of equal lengths of 120m are moving towards a 300 m long tunnel. Train B enters the tunnel after 30 seconds when train A entered the tunnel. Train A crosses the tunnel in one minute. If both of them leave the tunnel at the same time, then what is the speed of train B?
A train is traveling at a speed of 96 kilometers per hour. It takes 3 seconds to enter a tunnel and 30 seconds more to pass through it completely. Which of the following statements are correct? A. Length of the tunnel is 100 meters B. Tunnel is longer than train C. Train is longer than the tunnel D. Length of the train is 80 meters E. Length of the tunnel is 800 meters Choose the correct answer from the options given below:
A train approaches a tunnel XY. There is a dog located inside the tunnel at a point that is 3/8 of the distance XY measured from the entrance X. When the train whistles the dog gets scared and runs. If the dog moves towards the entrance of tunnel X, the train catches the dog exactly at the entrance of the tunnel. If the dog moves to exit Y, the train catches the dog at exactly the exit. Find the ratio of the speed of dog and train.
Train A takes 45 seconds to cross a tunnel while train B of same length takes 75 seconds to cross the same tunnel. The ratio of length of train and length of tunnel is 2 : 3. How long is the tunnel if the difference in the speeds of train is 20 m/s?
The cut of a tunnel face is shown in given figure. This is called
Tunnel Engineering mcq question image
একটি ট্রেনের স্থির অবস্থায় দৈর্ঘ্য হলো 100 m। এটি অতি উচ্চ বেগে 80m দৈর্ঘ্যের একটি সুড়ঙ্গের মধ্য দিয়ে যায়। সুড়ঙ্গের দুই প্রান্তে অবস্থিত পর্যবেক্ষকরা লক্ষ করেন যে, একটি মুহূর্তে ট্রেনটির দৈর্ঘ্য ঠিক সুড়ঙ্গের দৈর্ঘ্যের সমান হয়। c এর এককে ট্রেন এর বেগ কত? (A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel. What is the velocity of the train expressed in units of c?)
A train approaches a tunnel PQ. Inside a tunnel there is a rat at a point, the distance of which from P is equal to 5/12th of the length of PQ. When the train whistles, the rat runs towards the Point P of the tunnel to get exit then the Train catches it at Point P and if rat moves towards the Q for the exit then the Train catches it at Point Q. The speed of the train is how many times more than the speed of the rat?
A gun is fired from the end point of a tunnel. When gun is fired, a man runs from the starting point of the tunnel. Man hears the sound 3 min later. Find the length of the tunnel if the speed of man and sound are 36 m/sec and 343 m/sec respectively.
If a 450 meter long railway runs at a speed of 90 km/h through a tunnel, it crosses the tunnel in 1 minute 12 seconds, then what is the length of that tunnel?
It is desired to freeze 10,000 loaves of bread each weighing 0.75 kg from an initial room temperature of 18°C to a final temperature of -18°C. The bread-freezing operation is to be carried out in an air-blast freezing tunnel. It is found that the fan motors are rated at a total of 80 horsepower and measurements suggest that they are operating at around 90% of their rating, under which conditions their manufacturer’s data claims a motor efficiency of 86%. If 1 ton of refrigeration is 3.52 kW, estimate the maximum refrigeration load imposed by this freezing installation assuming that fans and motors are all within the freezing tunnel insulation and the heat-loss rate from the tunnel to the ambient air has been found to be 6.3 kW. Extraction rate from freezing bread (maximum) = 104 kW