Test 4 General Electrical Engineering

Test 4 General Electrical Engineering

1 Inside a hollow conducting sphere 

A. electric field is zero. 
B. electric field is a non zero constant. 
C. electric field changes with magnitude of the charge given to the conductor. 
D. electric field changes with distance from the center of the sphere.Answer

2 Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is 

A. same as that produced by one plate. 
B. double the field produced by one plate. 
C. dependent on coordinates of field points. 
D. zero.Answer

3 As a result of reflection from a a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the 

A. velocity of propagation. 
B. normal velocity. 
C. group velocity. 
D. phase velocity.Answer

4 Length of the cable is doubled, its capacitance C will be 

A. one-fourth. 
B. one-half. 
C. double. 
D. unchanged.Answer

5————- is the most detrimental impurity in the magnetic materials 

A. Carbon. 
B. Sulphur. 
C. Oxygen. 
D. Nitrogen.Answer

6 The chemical effect of current is used in

A. D.C ammeter hour meter. 
B. D.C ammeter. 
C. D.C energy meter. 
D. none of the above.Answer

7 Swamping resistance is used to compensate 

A. error due to temperature true variations. 
B. compensate error due to strong magnetic field. 
C. both A and B. 
D. none of these.Answer

8———– was the first city in India to adopt electric traction. 

A. Delhi. 
B. Madras. 
C. Calcutta. 
D. Bombay.Answer

9 Unit of deflection sensitivity of a CRO is 
A. V / mm. 
B. meter / volt. 
C. mm per mV. 
D. mm / V.Answer

10 Null type recorders are 

A. bridge recorders. 
B. LVDT recorders. 
C. potentiometric recorder. 
D. any one of the above.Answer