00:05Numerical number 8 of unit 19 electromagnetic induction is a transformer has 1000 tons in
00:14its primary coil and 200 tons in its secondary coil if the primary voltage is 120 volt calculate
00:25the secondary voltage for a step-down transformer so the most important data is the number of
00:41turns in primary coil are given which are 1000 tons number of turns in secondary coil
00:54are 200 tons and the voltage of primary means vp is 120 volt
01:10हमें secondary के voltages calculate करने हैं means vs is equal to watt
01:18यहां पर जो ट्रांस्फार्मर है वो step-down transformer है as we know that
01:29in a step-down transformer
01:38is this is a primary coil and this is secondary coil so number of turns in primary coil are given
01:49which
01:49are 1000 and number of turns in secondary are given which are 200 tons and voltage in primary is given
02:05which is 120 volt और हमें क्या calculate करना है we have to calculate voltage in secondary यहां पर
02:15step-down transformer है तो secondary के जो voltages होंगे वो 120 से कम आएंगे तो फार सलिशन
02:27our calculation we will use the basic equation of transformer is vs upon vp is equal to ns upon np
02:53multiplied with vp के यहां पर voltage in primary divide कर रहे हैं तो बराबर की दूसरी साइड
03:01multiply करेंगे now by putting the given values number of turns in secondary are 200 and
03:10number of turns in primary are 1000 multiplied with voltage in primary is 120 volt this zero will be
03:21cancelled with this zero and this zero will be cancelled with this zero and this zero will be
03:27cancelled with this zero so यहां पर 2 or 12 multiply कर रहें so voltage so voltage in
03:39secondary coil will be obtained as 2 into 12 it will be 24 volt so this is our final answer
03:47is the voltage
03:49in primary is 120 volt and voltage in secondary is obtained as 24 volts
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