Basic electricity quiz

A. Mho is the unit of

1. reactance

2. resistance

3. Impedance

4. conductance

Ans: 4

B. Magnetic flux is measured in

  

 1. Weber

 2.Weber/m²
 3. AT/cm
 4. AT

  

Ans: 1

C.The reciprocal of resistance is

1. Susceptance
2. Impedance
3. Conductance

4. Reactance

Ans: 3

D. Two capacitors each of 80 pf are connected in series. The equivalent capacitance is

  

           1.  40
 2.  50
 3.  160
 4.  125

Ans: 1

E. The capacity of a an electric cell is measured in

1.  ampere

2.  Watt

3.  kWh    

4.  ampere-hour

Ans: 4

F. The conductivity of an intrinsic semiconductor

1.  increases as the temperature increase

2.  decreases as the temperature increase

     3.   remains constant with change in temperature

4.  first decreases and then increases.

Ans: 1

G. Two resistances when in series give combined resistance of 4.5ohms and 1ohm when in parallel. The resistance values are 

 1. 1.5ohms and 3ohms

 2. 3 ohms and 9 ohms

 3. 6 and 6 ohms

 4. 3ohms and 6 ohms

Ans: 1

H.  The potential at a point in space is 30 V. The work done in bringing a charge of 0.5 C from infinity to this point will be

          

          1. 15J

          2. 20J

          3. 5J

          4. 40J

      

Ans: 1

I.  The resistivity of a wire depends on ____.

1. nature of material

2. length 

3. area of cross- section

4. all of the above

Ans: 4

J.  What does VFD stand for?

1. Variable Frequency drive

2. Very Frequent  drive

3. Voltage Frequency drive

4. None of them .

Ans: 1