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Question 504 in a primary pulse radar you have a a

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Question 504:In a primary pulse radar you have:A a directional aerial for both transmission and receptionB a directional aerial for transmission and another one for receptionC an omni-directional aerial for transmission and directional aerial forreceptionD a directional aerial for transmission and an omni-directional aerialfor receptionExplanation: A primary pulse radar such as ATC or weather radar use thesame, directional antenna for both transmission and reception. Since the
radar does not transmit and receive at the same time using the sameantenna is not an issue.The transmitter is connected to the antenna for the duration it takes forit to send an interrogation pulse and then disconnected. The receiver isthen connected to the antenna in order to receive any replies/echoes thatmay return as a result of the interrogation pulse. Once the allocatedtime for listening for returns is up (depending on the range of theradar) the receiver will be disconnected from the antenna and thetransmitter can be reconnected to send another interrogation pulse.Question 505:On an ILS approach, the localiser needle is fully over to the left. Howmuch deflection does this indicate?A 2.5ºB 0.7ºC 10ºD 5ºExplanation: Full scale deflection for the localiser indication is 2.5ºand for the glidepath indication 0.7º,Question 506:On an ILS approach, the glidepath needle is fully down. How muchdeflection does this indicate?A 0.7ºB 2.5ºC 5ºD 10ºExplanation: Full scale deflection for the glideslope display indicates0.7º displacement from the optimal gldeslope.Question 507:The audio modulation of the middle marker is keyed to giveA alternating dots and dashes at a rate of 2 dashes per second and 6 dotsper secondB a sequence of 3 dashes, 3 dots and 3 dashes every second.C continuous dashes at a rate of 2 per secondD continuous dots at a rate of 6 per secondExplanation: The outer marker (OM) is identified by a blue flashing lightand a 400 Hz tone transmitted as continuous dashes.The middle marker (MM) is identified by an amber flashing light and a1300 Hz tone transmitted as alternating dots and dashes.
The inner marker (IM) is identified by a white flashing light and a 3000Hz tone transmitted as continuous dashes.Question 508:A TCAS II equipped a/c will have mode S because:A the datalink is required to co-ordinate evasive manoeuvresB mode S transmits a 3D positionC true altitude is obtained from mode SD the data link is required to transmit relative positionExplanation: As TCAS II will provide co-ordinated resolution advisoriesbetween the affected aircraft, a mode S transponder is required tofacilitate for the transmission of additional data information betweenthe transponders. TCAS II only provide a resolution advisory in thevertical plane based on vertical distance and closure rate.

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Term
Fall
Professor
NoProfessor
Tags
VHF omnidirectional range, Instrument landing system, Distance measuring equipment

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