ECE132-WTP1

For the given circuit , which statement is true?

Where R_A & R_B are input resistances.

• Both resistances are equal

• Both input resistances have zero value

• R_A is less than R_B

• R_B= R_A /(1+R_A)

For the given circuit what will the output voltage if all the sources are ideal

• 10V

• 20V

• 30V

• 40V

Applying KCL and KVL, ________ and ________ of various circuits are calculated.

• current, frequency

• current, voltage

• resistance, current

• resistance, voltage

The method of Kirchhoff’s law is used to solve the questions with _____.

• branch current method

• node voltage method

• loop/mesh current method

• all are correct

The algebraic sum of all the voltages and current in a closed loop is equal to

• 0

• 1

• Infinity

• None of the mentioned

A transformer with N_a =500 , N_b=10. What is the value of secondary voltage if V_a = 120V.

• 1V

• 2V

• 2.4V

• 5V

A transformer with N_a =500 , N_b=10. What is the value of secondary voltage if V_a = 120V. Calculate I_a and I_b if load resistance is 15ohms.

• 0.2mA and 0.16mA

• 3.2mA and 0.16A

• 3.2mA and 0.16mA

• None of the above

If V_A = 440V, V_B=220V what is the Turn ratio of the transformer.

• 1

• 1/2

• 2/1

• 0

The frictional loss in a transformer is

• 0%

• 10%

• 50%

• >50%

The %age current drawn by the transformer at no load

• 0.2 - 0.5 %

• 2 - 5 %

• 12 - 15 %

• 20 - 30 %