AP Polycet (Polytechnic) 2022 Previous Question Paper with Answers And Model Papers With Complete Analysis

Polycet Mock Test

86) The electric power (in kWh) consumed in operating a 60W bulb for 3 hours a day in a month of 30 days is

A) 2.7
B) 5.4
C) 8
D) 36

View Answer

B) 5.4

Explanation:Power = 60 W, time = 3 hrs/day × 30 = 90 hrs
Energy = 60 W × 90 hr = 5400 Wh = 5.4 kWh
Answer:5.4

87) On increasing the temperature, the resistance of copper and germanium respectively

A) increases, decreases
B) decreases, increases
C) increases for both
D) decreases for both

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A) increases, decreases

Explanation:Copper is a metal → resistance increases with temperature.
Germanium is a semiconductor → resistance decreases with temperature.
Answer:increases, decreases

88) 3 Volt x 4 coulomb

A) 12 watts
B) 12 amperes
C) 12 ohms
D) 12 joules

View Answer

D) 12 joules

Explanation:Voltage × Charge = Work (Energy):
$3\,V × 4\,C = 12\,J$
Answer:12 joules

89) Three resistors of 1Ω, 0.1Ω and 0.01Ω are connected in series combination. Their Equivalent resistance is

A) 1.11Ω
B) 1.12Ω
C) 2.01Ω
D) 2.1Ω

View Answer

A) 1.11Ω

Explanation:To find the equivalent resistance of resistors connected in series, we simply add their resistances together.
Given:
– $R_1 = 1\,Ω$
– $R_2 = 0.1\,Ω$
– $R_3 = 0.01\,Ω$ *(Note: The question likely meant 0.01Ω, not 0.01Ω, as 0.1Ω is already listed)*
Calculation:
$R_{\text{eq}} = R_1 + R_2 + R_3 = 1\,Ω + 0.1\,Ω + 0.01\,Ω$
$R_{\text{eq}} = 1.11\,Ω$
Conclusion:
The equivalent resistance is 1.11,Ω.

90) The scientist who proposed that the metallic conductors contain large number of free electrons is

A) Oersted
B) Ohm
C) Kircchhoff
D) Drude and Lorentz

View Answer

D) Drude and Lorentz

Explanation:Free electron theory of metals proposed by Drude and Lorentz
Answer:Drude and Lorentz

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