Bissoy.com
Doctors Medicines MCQs Q&A

In which case does the optimum velocity increment occur provided exhaust velocities and propellant are same for all the stages?

In which case does the optimum velocity increment occur provided exhaust velocities and propellant are same for all the stages? Correct Answer Payload ratios of all stages are equal

In case of multi-stage rocket, if it is assumed that the exhaust velocity and th propellant is same for all the stages, there’s an optimum velcoty increment achieved when the payload of all the stages are equal.

Related Questions

Determine the mass ratio (Initial mass/Burnout mass) for each stage for a 3-stage rocket, given the total velocity increment is 2000 m/s, mass ratio is constant for all stages and the exhaust velocity is constant for all stages with a value of 3000 m/s.
In a newly developed innovative idea brought up by CSIR in India, gas turbine exhaust gas are being utilized to convert feedwater into steam. Certain data of the experiment are as follows: mass flow rate of exhaust gas = 40 kg/hr, enthalpy of exhaust gas at the time of their exit from gas turbine is 600 kJ/kg, steam turbine output as measured by brake dynamometer = 60 hp-sec, thermal efficiency of steam power plant is 0.25, efficiency of exhaust gas in converting feedwater into steam is taken as 50%. Find the enthalpy of exhaust gas remaining after they generate steam from feedwater?
Salary of A and B is Rs. 15000 and Rs. 24000 respectively. The savings of A and B is 10% and 15% respectively and other is expenditure. If there is increment in salaries of A and B by 5% and savings percentage is same. Then total expenditures of A and B before increment is what percent of total expenditures of A and B after increment?
If the motor axial specific impulse of a given nozzle is 340s for propellant ‘A’ and its characteristic velocity is 1400 m/s, determine the specific impulse for the same nozzle using a propellant ‘B’ with a characteristic velocity of 980 m/s. Assume both propellants ‘A’ and ‘B’ have the same specific heat ratio.
Average salary of an employee in a company is Rs. 30,000. All the employees are divides into three tiers each have different increments. If the average increment is 6% and the difference in increment in each tier is 1%.What is the average salary after increment if there is equal number of employees in each tier and total employees are 90?
The following question has three statements. Study the question and the statements and decide which of the statement(s) is necessary to answer the question. What is Ankit’s current monthly salary? I) On receiving an increment of 8%, his monthly salary will be Rs. 70200. II) On receiving an increment of 12%, his yearly salary will be Rs. 873600. III) Before receiving an increment of 30% last year, his monthly salary was Rs. 50000.
A, B, C, and D are all employee of the same company. In 2003 and 2004 each one got an increment in salary, respectively as: A : p% and (p + 1)% B : (p + 1)% and p% C : (p + 2)% and (p - 1)% D : (p + 4)% and (p - 3)% Starting salary of all four employees was the same. Who got the minimum increment in salary?
If the velocity increments of the first, second, and third stages are 1000 m/s, 500 m/s and 250 m/s respectively, determine the total velocity increment.
Vehicle’s final velocity increment can be increased by using a _________ propellant.
Oxides of nitrogen in Petrol engine exhaust can be reduced by the following methods: 1. Use of 5% lean mixture 2. Advancing the spark timing 3. Recirculating a fraction of exhaust gas 4. Using an oxidation catalyst in the exhaust manifold Which of the above statements is/are correct?