The Power Factor Of A D.C. Circuit is Always 

(A) Less Than Unity 

(B) Unity 

(C) Greater Than Unity 

(D) Zero

The transformer turns ratio determines 

(A) the reflected impedance 

(B)the ratio of primary and secondary voltages 

(C) the ratio of primary and secondary currents 

(D) All of these

In Shell type transformers the core has ______ limbs 

(A) One 

(B) two 

(C) three 

(D) four

 Which of the following theorems helps in simplifying computations when the load across a circuit is varying?

(A) Superposition 

(B) Norton’s 

(C) Thevenin’s 

(D) Maximum power transfer

Which supply is used for the transformers 

(A)DC 

(B) AC & DC 

(C) AC 

(D) All of the above

Which Power Of The Following is The Product Of Voltage And Current is

(A) True Power

(B) Reactive Power

(C) Voltamperes

(D) Instantaneous Power

What is represented by the hypotenuse of impedance triangle? 

(A) Impedance drop 

(B) Resistance 

(C) reactance 

(D)apparent power

For A Sine Wave With Peak Value Imax The R.M.S. Value is 

(A) 0.5 Imax 

(B) 0.707 

(C) 0.9 

(D) 1.414 Lmax

Power Factor Of The Following Circuit Will Be Unity

(A) Inductance 

(B) Capacitance 

(C) Resistance 

(D) Both (A) And (B) 

 If the peak value of a certain sine wave voltage is 10V, what is the peak to peak value? 

(A) 20V 

(B) 10V 

(C) 5V 

(D) 7.07V