subject
Engineering, 02.08.2021 15:30 Jasten

In the production of transistors, it is found that 30% of them are defective. If 6 transistors are selected at random from a day’s production, what is the probability that 4 of them are defective?

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:20
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
Answers: 1
question
Engineering, 06.07.2019 04:10
An inventor claims to have developed a reversed heat engine (ie. a heat pump) which is able to deliver 10 kj heat into the room at 20°c from outside ambient temperature of -10°c by consuming only 2 kj electricity in winter. this claim is a)-impossible b)-possible only if the heat pump is ideal c)-practically possible d)-unable to be assessed as it depends on the working fluid used in the heat pump.
Answers: 2
question
Engineering, 06.07.2019 05:10
An electric cable of 10 mm in diameter is to laid in atmosphere at 20°c. the estimated surface temperature of the cable due to heat generation is 65°c. find out ther maximum percentage, increese in heat dissipated when the wire is insulated with rubber having k =0155 w/m-k. take h=8.5w/m^2.k
Answers: 2
question
Engineering, 06.07.2019 05:20
Adrawing operation is to be performed on a perfectly plastic material with strength coefficient- 100 mpa and strain hardening exponent-0. neglect redundant strain. die/work material friction coefficient=0 a)-what is the drawing stress? if this stress is a function of the area reduction, state so. b)-what is the strength of the material after drawing? if this strength is a function of the area 4. reduction, state so. c)-what is the maximum area reduction possible?
Answers: 3
You know the right answer?
In the production of transistors, it is found that 30% of them are defective. If 6 transistors are s...
Questions
Questions on the website: 13722367