Those materials are well suited for making permanent magnets which have ________ retentivity and _________ coercivity

A. Low, high
B. High, high
C. High, low
D. Low, low

Conductivity is analogous to____________?

A. Retentivity
B. Resistivity
C. Permeability
D. Inductance

When both the inductance and resistance of a coil are doubled the value of________________?

A. Time constant remains unchanged
B. Initial rate of rise of current is doubled
C. Final steady current is doubled
D. Time constant is halved

Energy stored by a coil is doubled when its current is increased by percent___________?

A. 25
B. 50
C. 41.4
D. 100

Relative permeability of vacuum is__________?

A. 1
B. 1 h/m
C. 1/4ji
D. 4n x 10-‘ h/m

Permeability in a magnetic circuit corresponds to________ in an electric circuit

A. Resistance
B. Resistivity
C. Conductivity
D. Conductance

The relative permeability of a ferromagnetic material is_____________?

A. Less than one
B. More than one
C. More than 10
D. More than 100 or 1000

Who is the President of Pakistan Hockey Federation (PHF)?

A. Abdullah sultan
B. Khalid sajjad khokhar
C. Muhammad haroon
D. Touqeer dar

Who is the current CEO of Q-Mobile?

A. Anwar saifullah khan
B. Zeeshan akhtar
C. Jawed iqbal
D. Wang xiu ying

Which Country will Host ICC T-20 World Cup 2020?

A. India
B. Australia
C. Sri lanka
D. South africa