Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Determine the resistance and temperature-coefficient:
A platinum coil has a resistance of 3.146 Ω at 40oC and 3.767 Ω at 100oC. Determine the resistance at 0oC and the temperature-coefficient of resistance at 40oC.
Solution
Rt = R0 + α0 R0 (t - t0 )
Take t0 = initial temperature = 0o.
Rt = R0 + α0 t R0
= R0 (1 + α0 t )
R100 = R0 (1 + 100 α0) at t = 100 C ------- (i)
And R40 = R0 (1 + 40 α0 ) at t = 40oC ---------- (ii)
From Eqs. (i) and (ii)
3.767 /3.146 = 1 + 100 α0/1 + 40 α0 ⇒ α = 0.00379 pero C
From Eq. (i)
∴ 3.767 = R0 (1 + 100 × 0.00379)
R0 = 2.732,
α40 = 1/( (1/ α0) + (t2 - t1 ) =1/ (1/0.00379) + (40 - 0) = 1/304 per o C
What are plastics? Plastics are materials (containing carbon as common element) that have organic substances of high molecular weight and are able of being formed in required
Balanced Score Card and Key Performance Indicators Every successful organization measures its performance across the subsequent parameters, for dissemination to all stakeholde
if JK flip flop has 1600hz frequency .then what is the input frequency?
Q. Process of Amplitude Modulation? In AM the message signal is impressed on the amplitude of the carrier signal. There are several different ways of amplitude modulating the c
A capacitor is charged to 100 V and then discharged by a 50 kΩ resistor. If the time constant of the circuit is 0.8 s, verify: (a) The value of the capacitor, (b) The time
Define Cables - Generation and Absorption of Reactive Power? It is well known that the shunt capacitance of the cable is very large as compared to that of an overhead line. Thi
Ask questiochan #Minimum 100 words accepted# characteristics of transformer
Use of Capacitor in Technical Loss Reduction The use of capacitors to correct for poor power factor is a well-built and cost-effective means of reducing distribution system lo
Prepayment Meters Usage of prepayment meters will extensively improve the revenue collection of the utilities. There are a number of ways in that prepayment assures revenue pr
Your manager has requested you to review current techniques for reducing, or eliminating, the effects of external interference upon electronic circuits. He requires a short report
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd