A power transmission line feeds input power a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The input power $P_{	ext{in}}$ is given by the product of primary voltage $V_p$ and primary current $I_p$.$P_{	ext{in}} = V_p 	imes I_p = 2300

Vedclass · Accepted Answer

$45$

Vedclass · Answer

(A) The input power $P_{	ext{in}}$ is given by the product of primary voltage $V_p$ and primary current $I_p$.$P_{	ext{in}} = V_p 	imes I_p = 2300 	ext{ V} 	imes 5 	ext{ A} = 11500 	ext{ W}$.Efficiency $\eta$ is defined as the ratio of output power $P_{	ext{out}}$ to input power $P_{	ext{in}}$.Given $\eta = 90\% = 0.9$,so $P_{	ext{out}} = \eta 	imes P_{	ext{in}} = 0.9 	imes 11500 	ext{ W} = 10350 	ext{ W}$.The output power is also given by $P_{	ext{out}} = V_s 	imes I_s$,where $V_s = 230 	ext{ V}$ is the output voltage.$10350 	ext{ W} = 230 	ext{ V} 	imes I_s$.$I_s = \frac{10350}{230} 	ext{ A} = 45 	ext{ A}$.

Similar Questions

In a step-up transformer, the turn ratio is $1:10$. A resistance of $200 \, \Omega$ connected across the secondary is drawing a current of $0.5 \, A$. What is the primary voltage and current?

Find the current through the primary coil $(P)$ of the transformer shown below. (in $A$)

In a transformer,the number of turns in the primary coil is $140$ and in the secondary coil is $280$. If the current in the primary coil is $4\,A$,then the current in the secondary coil is.....$A$.

In a transformer,$220 \ V$ $AC$ voltage is increased to $2200 \ V$. If the number of turns in the secondary coil is $2000$,then the number of turns in the primary coil will be:

The coils of a step-down transformer have $500$ and $5000$ turns. In the primary coil, an $AC$ current of $4 \,A$ at $2200 \,V$ is sent. The value of the current and potential difference in the secondary coil is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module