Consider the following statements: 1. Ramjets work most efficiently at supersonic speeds around Mach 3 and can operate upto speeds of Mach 6. 2. A ramjet engine is an improvement over the scramjet engine. Which of the statements given above is/are correct?

Related MCQs

• Consider the following statements regarding scramjet: 1. It stands for supersonic combustion ramjet. 2. It uses atmospheric oxygen to burn hydrogen fuel. 3. These are efficient only at hypersonic speed. Which of the statements given above is/are incorrect?
• Consider the following statements regarding Venus Atmospheric Maneuverable Platform (VAMP): 1. It is a project to have a plane cruise through the sulfurous skies of Venus. 2. It would be flown 50 to 70 km above the surface of Venus. 3. The temperature 50 to 70 km on Venus is about 30 degree Celsius. Which of the statements given above is/are correct?
• Consider the following statements regarding E-Paper: 1. It is the technology mimicking appearance of ordinary ink on paper. 2. It works best in dark like standard LED displays work. Which of the statements given above is/are correct?
• Consider the following statements regarding Fast Neutron Reactors: 1. It is a type of reactor in which nuclear fission chain reaction is sustained by fast neutrons. 2. Fast Neutron Reactors need neutron moderator. 3. It can help in reprocessing and deactivation of radioactive waste material. Which of the statements given above is/are correct?
• Consider the following statements about PAVA shells: 1. It is an inorganic compound. 2. It can temporarily paralyse humans. 3. It has been considered as a non-lethal munitions to control crowd by TVSN Prasad Committee. Which of the statements given above is/are correct?
• Consider the following statements regarding self-driven cars: 1. It cannot navigate without human command but can automatically detect their surroundings. 2. These cars are powered by Artificial Intelligence. Which of the statements given above is/are correct?
• Consider the following statements regarding RESOURCESAT-2A satellite: 1. It is a navigation satellite intended for resource monitoring. 2. Its weight is 1,235 kg. 3. It will follow the mission of Resourcesat-1 and Resourcesat-2 launched in 2003 and 2011 respectively. Which of the statements given above is/are correct?
• Consider the following statements regarding Bitcoin: 1. It is a form of digital currency, created and held electronically. 2. They aren’t printed like other currencies. 3. It is an example of cryptocurrency. 4. The bitcoin network is controlled by a central authority. Which of the statements given above is/are correct?
• Consider the following statements regarding Solar Power Tree, developed by the CSIR-CMERI: 1. It will harness solar energy for producing electricity with vertical arrangement of solar cells. 2. It reduces the requirement of land and keeps the land character intact. 3. It is not viable for urban areas. Which of the statements given above is/are correct?
• Consider the following statements regarding Nature Index 2016 Rising Stars report: 1. The report ranked countries with highest increase in their contribution to environment protection. 2. According to the report, India ranked second and was only behind USA. Which of the statements given above is/are correct?