One horsepower (HP) is equal to
a) $7.46$ watts
b) $74.6$ watts
c) $746$ watts
d) $0.746$ watts
Correct Answer: Option C
Solution:
One horsepower is equal to $746$ watts
07 August 2022
Circuit Theory
One horsepower is equal to $746$ watts
Circuit Theory
One horsepower (HP) is equal to
a) $7.46$ watts
b) $74.6$ watts
c) $746$ watts
d) $0.746$ watts
Correct Answer: Option C
Solution:
One horsepower is equal to $746$ watts
Circuit Theory
Match the following
A: Power $1$: Work-done in moving an unit charge
B: Energy $2$: Rate of work-done
C: Voltage $3$: Capacity to do work
a) A-$3$ B-$1$ C-$2$
b) A-$2$ B-$3$ C-$1$
c) A-$1$ B-$2$ C-$3$
d) A-$3$ B-$2$ C-$1$
Correct Answer: Option B
Solution:
How fast a work can be done is power.
How much work can be done is Energy.
How much work is done when moving an unit charge against an electric field is voltage.
Hence
A: Power $2$: Rate of work-done
B: Energy $3$: Capacity to do work
C: Voltage $1$: Work-done in moving an unit charge
Circuit Theory
Match the following
A: Power $1$: Work-done in moving an unit charge
B: Energy $2$: Rate of work-done
C: Voltage $3$: Capacity to do work
a) A-$3$ B-$1$ C-$2$
b) A-$2$ B-$3$ C-$1$
c) A-$1$ B-$2$ C-$3$
d) A-$3$ B-$2$ C-$1$
Correct Answer: Option B
Solution:
How fast a work can be done is power.
How much work can be done is Energy.
How much work is done when moving an unit charge against an electric field is voltage.
Hence
A: Power $2$: Rate of work-done
How much work can be done is Energy.
How much work is done when moving an unit charge against an electric field is voltage.
Hence
A: Power $2$: Rate of work-done
B: Energy $3$: Capacity to do work
C: Voltage $1$: Work-done in moving an unit charge
Circuit Theory
Unit of energy is
a) Joules
b) watt-seconds
c) watt-hours
d) All the above
Correct Answer: Option D
Solution:
Energy is nothing but capability to do work.
Since Energy = Work-done, its unit is also joules.
Since Power = Rate of work done and $$P=W/t$$ $$P=E/t$$ $$E=Pt$$
Hence unit of energy is also watt-seconds or watt-hours
Circuit Theory
Unit of energy is
a) Joules
b) watt-seconds
c) watt-hours
d) All the above
Correct Answer: Option D
Solution:
Energy is nothing but capability to do work.
Since Energy = Work-done, its unit is also joules.
Since Power = Rate of work done and $$P=W/t$$ $$P=E/t$$ $$E=Pt$$
Hence unit of energy is also watt-seconds or watt-hours
Circuit Theory
One kWh is equal to
a) $860\;kcal$
b) $800\;kcal$
c) $746\;kcal$
d) $736\;kcal$
Correct Answer: Option A
Solution:
One kWh = $860.4\;kcal$
One calorie or kcal = $4184\;J$ or $4.18\;kJ$
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