Characteristic Impedance MCQ Quiz in मल्याळम - Objective Question with Answer for Characteristic Impedance - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക

Last updated on Apr 16, 2025

നേടുക Characteristic Impedance ഉത്തരങ്ങളും വിശദമായ പരിഹാരങ്ങളുമുള്ള മൾട്ടിപ്പിൾ ചോയ്സ് ചോദ്യങ്ങൾ (MCQ ക്വിസ്). ഇവ സൗജന്യമായി ഡൗൺലോഡ് ചെയ്യുക Characteristic Impedance MCQ ക്വിസ് പിഡിഎഫ്, ബാങ്കിംഗ്, എസ്എസ്‌സി, റെയിൽവേ, യുപിഎസ്‌സി, സ്റ്റേറ്റ് പിഎസ്‌സി തുടങ്ങിയ നിങ്ങളുടെ വരാനിരിക്കുന്ന പരീക്ഷകൾക്കായി തയ്യാറെടുക്കുക

Latest Characteristic Impedance MCQ Objective Questions

Top Characteristic Impedance MCQ Objective Questions

Characteristic Impedance Question 1:

For a co-axial cable, inner diameter of outer conductor and diameter of inner conductor are 1 cm and 0.01 cm respectively. If dielectric constant ϵr of the material filling in cable is 4, characteristic impedance of the co-axial cable is_____Ω

Use μo=4π×107H/m, ϵo=10936πF/m

Answer (Detailed Solution Below) 137 - 139

Characteristic Impedance Question 1 Detailed Solution

Inner diameter of outer conductor, D = 1 cm

Diameter of inner conductor, d = 0.01 cm

Characteristic impedance of coaxial cable, Z0=12πμϵ×ln(Dd)=138εrlogDd

Zo=1382log10.01=138Ω

Characteristic Impedance Question 2:

For a transmission line with homogenous dielectric, capacitance per unit length is 6 F/m relative permittivity of the dielectric is ϵr and inductance per unit length L H/m, has intrinsic impedance Z0. Velocity of light in free space is v. Value of Z0 can be given by,

  1. εrvC

  2. εrvC

  3. εrvC

  4. εrvC

Answer (Detailed Solution Below)

Option 4 :

εrvC

Characteristic Impedance Question 2 Detailed Solution

v=1LCεr=εrLC

And, Z0=LCZ0=εrvC

Characteristic Impedance Question 3:

The inductance per meter of a coaxial cable with inner and outer radius of 2 mm and 6 mm and with a non-magnetic material as dielectric is ________ μH/m

Answer (Detailed Solution Below) 0.21 - 0.22

Characteristic Impedance Question 3 Detailed Solution

The inductance per unit L for a coaxial cable is given by

L=μ2πln(ba)=4π×1072πln(62)L=0.2197 μH/m

Characteristic Impedance Question 4:

A coaxial cable with dielectric medium having permittivity ϵr = 2.77 is terminated with a load of 25 Ω. The input impedance seen from the other end of the transmission line is 100Ω. The length of the transmission line with inner and outer radii 2mm and 8mm respectively is?

  1. λ/8

  2. λ/10

  3. λ/4

  4. λ/6

Answer (Detailed Solution Below)

Option 3 :

λ/4

Characteristic Impedance Question 4 Detailed Solution

The characteristic impedance of coaxial cable is given by

Z0=60ln(ba)rz0=60ln(82)2.77Z050 Ω

Now Zin = 100 Ω

We see,Zin is real for real Z0.While for lengths of λ/8, λ/10, and λ/6, Zin is complex for real Z0. So, length is λ/4.

Now for length of λ/4

Zin=Z02ZL=50225=100 Ω

Hence, our answer is justified.

Get Free Access Now
Hot Links: teen patti master online teen patti real cash withdrawal teen patti joy apk