Power Engineering questions 4a - Math EXAM 2026-
2027 LATEST UPDATED VERSION QUESTIONS AND
ANSWERS
If 25 workers can do a piece of work in 30 days, in how many
days can 35 workers do the same work?
a) 20.00
b) 18.00
c) 20.25
d) 19.15
e) 21.43 - answer>>e
If bell metal is 25 parts copper to 12 parts tin, what is the
weight of each in a bell weighing 1850 kg?
a) copper = 1,250 kg and tin = 600 kg
b) copper = 1,152 kg and tin = 550 kg
c) copper = 1,050 kg and tin = 565 kg
d) copper = 1,350 kg and tin = 625 kg
e) copper = 1,235 kg and tin = 650 kg - answer>>a
A gear wheel 330 mm in diameter and revolving at a speed of
200 rpm drives a wheel 150 mm in diameter. What is the speed
in rpm of the second gear?
a) 91
b) 100
,c) 330
d) 400
e) 440 - answer>>e
A supply fan is driven by an electric motor by means of
V-belts. The pulley on the motor shaft is 90 mm in diameter
and rotates at 1,800 rpm. The diameter of the pulley on the
fan shaft is 300 mm. What is the speed of the fan in rpm?
a) 2,000
b) 1,800
c) 900
d) 540
e) 450 - answer>>d
A driving gear has 60 teeth and turns at 750 rpm. The driven
gear has 90 teeth. What is the speed of the driven gear in
rpm?
a) 1,125
b) 1,000
c) 500
d) 450
e) 400 - answer>>c
A = (Pi)r^2 is the same as:
,a) 1 = A(Pi)r^2
b) A^2 = (Pi)r
c) sqr(A/Pi) = r
d) (A/Pi)^2 = sqr(r)
e) sqr(A) = (Pi)r - answer>>c
In the equation 36 = 12 + (15t) - 6, t equals:
a) 3
b) -2.2
c) 1.7
d) -2.8
e) 2 - answer>>e
In the equation 3 x sqr(t) = 39, t equals:
a) 13
b) 169
c) 26
d) sqr(13)
e) 9 - answer>>b
, Solve the following equation for b,
[b^2 - (q + s)] / q = s
a) sqr(10s + q)
b) sqr[-qs / (q + s)]
c) sqr(2s)
d) sqr[qs + (q + s)]
e) sqr(8s - q) - answer>>d
Solve the following equation for m, y = mt + c
a) mt - y
b) y / (t + c)
c) ym - c
d) (y - c) / t
e) y - t - c - answer>>d
Solve the following equation for r, [4(Pi)r ] / 3 = V
a) cubed root[4(Pi)V / 3]
b) V / 4(Pi)
c) Pi / 3V
d) cubed root[3V / 4(Pi)]
e) 3V / 4 - answer>>d
Solve s = ut + 1/2 at^2 for u
2027 LATEST UPDATED VERSION QUESTIONS AND
ANSWERS
If 25 workers can do a piece of work in 30 days, in how many
days can 35 workers do the same work?
a) 20.00
b) 18.00
c) 20.25
d) 19.15
e) 21.43 - answer>>e
If bell metal is 25 parts copper to 12 parts tin, what is the
weight of each in a bell weighing 1850 kg?
a) copper = 1,250 kg and tin = 600 kg
b) copper = 1,152 kg and tin = 550 kg
c) copper = 1,050 kg and tin = 565 kg
d) copper = 1,350 kg and tin = 625 kg
e) copper = 1,235 kg and tin = 650 kg - answer>>a
A gear wheel 330 mm in diameter and revolving at a speed of
200 rpm drives a wheel 150 mm in diameter. What is the speed
in rpm of the second gear?
a) 91
b) 100
,c) 330
d) 400
e) 440 - answer>>e
A supply fan is driven by an electric motor by means of
V-belts. The pulley on the motor shaft is 90 mm in diameter
and rotates at 1,800 rpm. The diameter of the pulley on the
fan shaft is 300 mm. What is the speed of the fan in rpm?
a) 2,000
b) 1,800
c) 900
d) 540
e) 450 - answer>>d
A driving gear has 60 teeth and turns at 750 rpm. The driven
gear has 90 teeth. What is the speed of the driven gear in
rpm?
a) 1,125
b) 1,000
c) 500
d) 450
e) 400 - answer>>c
A = (Pi)r^2 is the same as:
,a) 1 = A(Pi)r^2
b) A^2 = (Pi)r
c) sqr(A/Pi) = r
d) (A/Pi)^2 = sqr(r)
e) sqr(A) = (Pi)r - answer>>c
In the equation 36 = 12 + (15t) - 6, t equals:
a) 3
b) -2.2
c) 1.7
d) -2.8
e) 2 - answer>>e
In the equation 3 x sqr(t) = 39, t equals:
a) 13
b) 169
c) 26
d) sqr(13)
e) 9 - answer>>b
, Solve the following equation for b,
[b^2 - (q + s)] / q = s
a) sqr(10s + q)
b) sqr[-qs / (q + s)]
c) sqr(2s)
d) sqr[qs + (q + s)]
e) sqr(8s - q) - answer>>d
Solve the following equation for m, y = mt + c
a) mt - y
b) y / (t + c)
c) ym - c
d) (y - c) / t
e) y - t - c - answer>>d
Solve the following equation for r, [4(Pi)r ] / 3 = V
a) cubed root[4(Pi)V / 3]
b) V / 4(Pi)
c) Pi / 3V
d) cubed root[3V / 4(Pi)]
e) 3V / 4 - answer>>d
Solve s = ut + 1/2 at^2 for u
