机械类笔试试题
1. briefly describe (cutting), forming, coining and embossing in stamping process.
2. ?
3. glass fiber to thermoplastic material?
4. in contrast her coefficient of thermal expansion(cte).
5. the most suitable material for a integral hinge design (typical plastic thickness=0.25 to 0.5mm at hinge)
6. can a bending load makes both compressive and tensile stress in a member?
7. n criteria used in plastics catch/snap?
8. e?
ee笔试试题
1. name 3 vehicle buses.
2. name 2 possible sources of electromagnetic interference on electronics circuit a.
3. th for 12mhz frequency signal is____
4. name 2 important considerations for car radio performan -ce related to audio signal processing under multipath condition?
5. nal strength to achieve 30db s/n for car radio?
6. e frequency?
7. for a system ulator loop instability?
(1)equivalent series resistance(esr)
(2)effective series inductance(esl)
(3)capacitance value
(4)dielectric material
9. the s regulator is capable of:
(1)higher po an output voltage that is higher than the input
(3)generating an output boltage oppsite in polarity to the input
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