railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Electrical and Electronics Measurements Measurement of Frequency and Power Factor Measurement of Frequency
The four impedances of an A.C bridge shown in the figure as:
Z1 = 400 ∠50° Ω
Z2 = 200 ∠40° Ω
Z4 = 400 ∠20° Ω
What will be the value of Z3 for which bridge is balanced?1
800 ∠20° Ω
2
800 ∠30° Ω
3
200 ∠30° Ω
4
200 ∠-50° Ω