dataset update

astro-mcqa.csv

@@ -204,3 +204,13 @@ Which of the following reflective optical system is analogous to the Tele-optic
 Which of the following best describe a spherical aberration?,"[""when a sharp image is formed on a focal surface which isn't flat"", 'when light from the periphery of a spherical lens or mirror is focused nearer the element than light from the center', 'when an otherwise sharp image is distorted in shape, such as when straight light on the surface being viewed appear curved on the focal plane', 'dispersion of the light due to the refractive index of a lens being a function of the wavelength']","[0, 1, 0, 0]",,True,881245b2-6dfa-4b39-93fa-454b10919ef7
 "Assuming you are calculating parameters for a passive optical sensor, what would be the sensor dynamic range DR (with respect to cold space) assuming that the number of photocarriers available Ne = 7.3e6 (evaluated for an ideal detector) and number of read-out noise electrons is Nr = 5000?","['DR = Neˆ2 / Nr = 1.07e10', 'DR = Ne / Nr = 1460', 'DR = sqrt(Ne) / Nr = 0.54']","[0, 1, 0]",,True,6a6dcec7-6109-4832-8981-f221e2f9e28e
 Which type of satellite sensor should you select for you AOCS if you need an accuracy of 0.1 deg and have string mass constraint?,"['Sun Sensor', 'Star Sensor', 'Magnetometer']","[1, 0, 0]",Sun sensors have a typical accuracy of 0.005 def to 3 deg with mass varying from 0.1 to 2 kg which is accurate but weight less than star sensors. Magnetometers are not accurate enough for this performance requirements,True,b5555ff7-242f-4fe4-8734-7148627758e7
+Which of the following definition is correct in the domain of spacecraft mechanisms?,"['Deployables - devices used to provide optical adjustments for space instruments', 'Drives - devices requiring continuous or frequent operation for the life of the mission where wear, lubrication and life are critical', 'Instrument mechanisms - devices generally used to create spacecraft on-orbit configurations which are larger than can be packed in the launch vehicle fairing']","[0, 1, 0]",,True,34f1d6d5-a95f-4e56-b19c-8a54a8cb5da3
+What is true about MLI for satellites?,"['MLI stands for Micro Layer Insulation', 'MLI stands for Multiple Layer Insulation', 'Composed of multiples layers of low-emittance films with low conductivity', 'Composed of micrometer thickness layers of high-emittance films sandwiched with carbon fiber reinforced mesh']","[0, 1, 1, 0]",,True,8c856182-3296-4088-b56f-9be8c16eb27e
+Which of the following thermal dissipation mechanism is usually not accounted for for satellite thermal balance?,"['Conduction', 'Radiation', 'Convection']","[0, 0, 1]",,True,a63a44bc-930e-4048-986e-2a2f80bf4a53
+Which of the following thermal control component is used to warmup the catalyst bed of hydrazine thrusters?,"['Surface finish', 'Louvers', 'Patch heater', 'Cartridge heater', 'Grooved Heat pipe']","[0, 0, 0, 1, 0]",,True,d03a4ef0-162b-470d-969e-b7a2b75d223b
+Which of the following reviews according to European Space Agency space program life cycle comes last?,"['CDR', 'MCR', 'PDR', 'SRR']","[1, 0, 0, 0]",,True,af4a6b5c-618a-4ce9-bbeb-f3c3d6252467
+Select all which are commonly accepted end item verification methods?,"['Verification by inspection', 'Verification by analysis', 'Verification by test', 'Verification by similarity']","[1, 1, 1, 1]",All 4 methods are widely recognized methods of formal verification. Some users add another category of verification method: demonstration.,True,ebd7de2e-9dea-4aad-be29-3587856b4e75
+What are burn-in tests for spacecraft components?,"['application of radiation stesses simulating single events', 'application of electrical stresses above normal use, or rating, usually high voltage', 'application of pseudo-random vibration spectum predicted for launch and atmospheric ascent', 'sustained high temperature operation over pre-defined time span', 'application of transients simulating those resulting from sudden release of loads (staging/separation, deployment)']","[0, 0, 0, 1, 0]",,True,828838d1-992e-412b-91ea-fe10ed216ec5
+"What type of environmental tests for units under tests correspond to rapid temperature transitions between defined extremes under normal atmospheric conditions, dwelling at extremes for hours at a time?","['Pyro-shock', 'Thermal vacuum', 'Burn-in', 'Thermal cycling', 'Enhanced low dose rate sensitivity (ELDRS)']","[0, 0, 0, 1, 0]",,True,2147b0f6-662f-4872-8b8e-18e280d5e29d
+How can you compute the MTBF assuming you know the failure rate lambda?,"['lambdaˆ2', 'lambdaˆ(1/2)', '1 / lambda', 'lambda / (1 - lambda)']","[0, 0, 1, 0]",,True,beb8a417-4d86-44f1-b07b-e3ba7dbf6194
+"Consider a propellant feed system with two valves in series. Valve one has a probability of failure in close position of 0.01 and the other valve has a probability of failure in close position of 0.02. If any of the valve fail in the close position, the propellant cannot flow anymore. What is the overall reliability R of the feed system to still be open?","['Approximately 0.95', 'Approximately 0.97', 'Approximately 0.03', 'Approximately 0.02', 'Exactly 0.87', 'Exactly 0.76']","[0, 1, 0, 0, 0, 0]",R = (1 - 0.01)*(1-0.02) = 0.99 * 0.98 = approx. 0.97,True,0908d052-016a-410e-a96c-ab10b813b4f6